Table of Content

15 March 2022, Volume 43 Issue 03

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Invited Column: Biomedical Textiles

Research progress in warp-knitted meshes for tackling complications after hernia repair

QIAO Yansha, MAO Ying, XU Danyao, LI Yan, LI Shaojie, WANG Lu, TANG Jianxiong

Journal of Textile Research. 2022, 43(03):  1-7.  doi:10.13475/j.fzxb.20211109707

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In view of the multiple complications caused by synthetic meshes implanted for hernia repair, a literature review was carried out and it revealed that the triggering factors of complications are the pollution from the pathogenic bacteria and the foreign body reaction from the mesh. Regarding the commonly used warp-knitted mesh, the present treatments were divided into the warp-knitted structure adjustment and the surface modification. According to the different scenarios (bacterial or aseptic inflammation) and occasions (intraperitoneal or extraperitoneal), the surface modifications were classified and explained. The progress in related researches and clinical commercial meshes in recent years were scrutinized, and summarized three types of modified meshes (anti-bacterial, anti-adhesion, anti-inflammation) were summarised. By outlining the corresponding mechanisms and effects on complications, this paper pointed out the current problems of these types of modified meshes and concluded that the high-value warp-knitted mesh is the future development direction.

Progress in biomass fiber medical dressings

WU Yang, LIU Fangtian, CAO Mengjie, CUI Jinhai, DENG Hongbing

Journal of Textile Research. 2022, 43(03):  8-16.  doi:10.13475/j.fzxb.20211200109

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In view of the problems of easy infection and secondary injury of current traditional medical dressings in wound care, this paper reviews the good hygroscopicity, bacteriostasis and certain biological activity of some biomass fibers, the advantages of biomass fibers as medical dressings are introduced, considering the natural biodegradability, biocompatibility and non-toxicity of biomass raw materials. By briefly summarizing the preparation methods of different biomass fibers for medical dressings, the suitable biomass fibers for the customized treatment of different wounds are proposed. The research progress of various biomass fiber medical dressings achieved in recent years are reviewed, including their functional applications in antibacterial and anti-inflammatory, drug delivery, exudate management, and tissue replacement medical dressings. The existing problems and future development directions of biomass fiber medical dressings are discussed.

Numerical simulation of hemodynamics in spiral artificial blood vessel

LI Tianhua, LI Jingjing, ZHANG Keqin, ZHAO Huijing, MENG Kai

Journal of Textile Research. 2022, 43(03):  17-23.  doi:10.13475/j.fzxb.20211104607

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Low wall shear stress (WSS) is one of the mechanical causes for restenosis after vascular transplantation. In order to investigate the effect of swirling flow on hemodynamics such as WSS, an end-to-side anastomotic model between the spiral artificial blood vessel and the host vessel was constructed. The formation of swirling flow was confirmed by finite element numerical simulation, and the effects of anastomotic angle, spiral radius and pitch on WSS in the toe of the model (an area prone to intimal hyperplasia) were discussed. The results show that the lowest value of the time average wall shear stress (TAWSS) in a cardiac cycle is 1.2 Pa when the anastomotic angle is 30°, which are higher than the values of 0.3 Pa (45°) and 0.4 Pa (60°) respectively. When the spiral radius is 1.0, 1.5 and 2.0 mm, the corresponding minimum TAWSS is 0.69, 0.68 and 1.06 Pa respectively, which shows larger spiral radius is more favorable to improve the WSS. When the pitch gradually decreases from 96 mm to 48 and 32 mm, the minimum TAWSS gradually increases from 0.77 Pa to 1.06 and 1.30 Pa. It shows that when the pitch is small, the minimum TAWSS is high.

Preparation of exosome-functionalized shish-kebab fibrous membrane and its osteogenic differentiation ability

ZHANG Yu, LIU Laijun, LI Chaojing, JIN Qiaoqiao, XIE Qianyang, LI Peilun, WANG Fujun, WANG Lu

Journal of Textile Research. 2022, 43(03):  24-30.  doi:10.13475/j.fzxb.20211102108

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In order to improve the osteoconduction of synthetic resorbable membranes for guided bone regeneration, polycaprolactone (PCL)/β-tricalcium phosphate (β-TCP) shish-kebab nanofibrous membranes were prepared by electrospinning and solvent-induced crystallization. Exosomes were then immobilized on membranes via adhesion of polydopamine. The morphology, chemical composition, physicochemical and cellular osteogenic differentiation properties of the composite fibrous membranes were characterized. The shish-kebab structure was successfully induced on PCL/β-TCP nanofibers. The results show that membranes doubly modified by shish-kebab and polydopamine had the best surface wettability and excellent protein adsorption ability. Exosome-functionalized shish-kebab fibrous membrane increases the alkaline phosphatase activity of bone marrow mesenchymal stem cells due to the synergistic effect of shish-kebab structure, polydopamine, and exosome, which has good therapeutic potential for promoting bone healing in vivo.

Preparation and properties of antibacterial hemostatic nonwoven elastic bandage

CHENG Yue, HU Yingjie, FU Yijun, LI Dawei, ZHANG Wei

Journal of Textile Research. 2022, 43(03):  31-37.  doi:10.13475/j.fzxb.20211105307

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In emergencies, surgical operations and military conflicts, the human body may suffer from severe trauma resulting in massive bleeding. In order to effectively control bleeding and reduce the chance of wound infection, an elastic bandage with antibacterial hemostatic functions was developed. Polypropylene (PP) spunbonded elastic nonwovens were chosen as the base materials and treated with hydrophilic modification of polyvinyl alcohol (PVA) and grafting modification of chitosan (CH) to obtain PP-PVA-CH elastic nonwovens with both functions of antibacterial and hemostasis. The properties of the samples before and after modification were analyzed. The results show that PVA and CH were successfully loaded on the surface of nonwovens without affecting the main crystal structures. The maximum tensile breaking strength and elongation at break of PP-PVA-CH were 1.40 and 1.24 times higher than that of PP, and elastic recovery rate of PP-PVA-CH was 88%. Contact angle of the modified sample decreased effectively, and the diffusion areas of deionized water and synthetic blood were 13.0 and 12.9 times that of PP elastic nonwovens, respectively. Antibacterial rate of PP-PVA-CH elastic nonwovens against E.coli and S.aureus were found higher than 99.0%.

Design and in-vitro mechanical property analyses of sling for female stress urinary incontinence

FANG Meiqi, WANG Qian, LI Yan, LI Chaojing, LI Hao, WANG Lu

Journal of Textile Research. 2022, 43(03):  38-43.  doi:10.13475/j.fzxb.20211109806

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To improve the postoperative erosion of female stress urinary incontinence, a sling with laser-cut diamond-shaped pores and a sling with rectangular pore shapes and self-locking edge were designed. The mesh width, thickness, density, ratio of course density to wale density, pore size, porosity, and effective porosity were characterized and analyzed. The test results of the uniaxial tension and constant load tension test, and the long-term effectiveness and the shrinkage of the two types of slings were discussed and studied. The results show that the two slings are light-weight with large pores, meeting the requirements of high effective porosity, and there is no significant difference between the two in breaking strength and elongation. However, the elastic modulus and flexural stiffness of rectangular mesh sling are obviously larger than that of diamond mesh sling, having higher effective porosity, better dimensional stability and more significant supporting effect of urethral wall under both 2.5 and 16 N/cm loading. The flexibility of the slings would need further improvement.

Fiber Materials

Effect of thermal conductive structure on non-isothermal crystallization behavior of polyethylene terephthalate

XU Xiaotong, JIANG Zhenlin, ZHENG Qinchao, ZHU Keyu, WANG Chaosheng, KE Fuyou

Journal of Textile Research. 2022, 43(03):  44-49.  doi:10.13475/j.fzxb.20210310006

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The thermal conductive structure in polyethylene terephthalate will affect the processability of fiber materials and textiles, and various properties of the fiber. Polyethylene terephthalate (PET) composite containing carbon nanotubes (CNTs) and graphene (GR) was prepared by fusion mixing, and the non-isothermal crystallization kinetics of PET was studied by differential scanning calorimetry. The results show that doped carbon nanotubes and graphene act as nucleators in PET, and the increase in their mass fraction promotes the crystallization temperature, crystallization rate and crystallinity. The crystalline activation energies of pure PET, PETs doped with carbon nanotubes and graphene were -95.23、-160.27 and -176. 79 kJ/mol, respectively, calculated using Kissinger method. The increase of the absolute value of crystallization activation energy promotes the movement of macromolecule chain and accelerates the exothermic process of crystallization. The results show that CNTs and GR promote the crystallization rate and nucleation of PET, and the 2-D sheet thermal conductivity of graphene favors PET crystallization.

Preparation and fluorescence enhancement mechanism of bonded polymer fluorescence fibers

ZHANG Aiqin, HAO Jiacheng, WANG Zhi, WANG Yongchao, LIU Shuqiang, DONG Hailiang, JIA Husheng, XU Bingshe

Journal of Textile Research. 2022, 43(03):  50-57.  doi:10.13475/j.fzxb.20210107408

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In order to further improve the luminescence efficiency of bonded terbium polymer phosphors, the bonded phosphors poly(MMA-co-Tb(4-BBA)₃(4-VP)₂-co-NVK) were prepared by copolymerization with the complex Tb(4-BBA)₃(4-VP)₂, N-vinylcarbazole (NVK) and methyl methacrylate (MMA) employing the technology of pre-coordination and post-polymerization, and the corresponding green fluorescence fibers were prepared by electrospinning. The structure and properties of the phosphors and fibers were characterized. The results exhibit that the fluorescence fibers with different content of the complex Tb(4-BBA)₃(4-VP)₂ show bright green emission excited by light with 365 nm wave length. The fibers have smooth surface and uniform diameter. The fluorescenct intensity and micro-morphology of the fluorescence fibers in the same trend as the complex content, which establishes the internal relationship between the micro-morphology and fluorescent intensity of fibers. The fluorescent intensity of the fibers is 1.6 times higher than that of the corresponding phosphors, reaching the maximum at 14% of the complex Tb(4-BBA)₃(4-VP)₂ content. The brightness of LED devices fabricated with nanofiber membrane reaches 24 390 cd/m², which is 2.6 times that of LEDs made using the conventional coating methods.

Preparation and performance of modified polyacrylonitrile fibers photocatalyst with MIL-53(Fe)

DENG Yang, SHI Xianbing, WANG Tao, LIU Liwei, HAN Zhenbang

Journal of Textile Research. 2022, 43(03):  58-63.  doi:10.13475/j.fzxb.20201201106

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MIL-53(Fe) powder suffers from limited photoabsorption, low catalytic efficiency and poor recycling ability in the application of photocatalysis. A highly efficient MIL-53(Fe) photocatalyst was constructed with irregular structure via an in-situ synthesis method using amidoximated polyacryloni-trile(PAN) fiber as the support. The surface morphology, microstructure and light absorption performance of the photocatalyst were characterized and analyzed by scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy and UV-Vis diffuse reflectance spectroscopy, and the photocatalytic performance was evaluated by the degradation of an organic dye. The results indicate that the in-situ synthesized MIL-53(Fe) are evenly distributed on the modified PAN fibrous support, and partial MIL-53(Fe) exhibit certain crystalline properties. Furthermore, the fibrous ligand greatly extends the spectral response of MIL-53(Fe) to 800 nm through ligand-to-metal charge transfer (LMCT) effect. Benefiting from the synergistic effect of fiber ligand and terephthalic acid ligand, the in-situ produced MIL-53(Fe) shows high photocatalytic activity for dye degradation under visible light irradiation, much superior to the MIL-53(Fe) powder and the fiber supported MIL-53(Fe) using a direct combination method. The findings provide a novel approach to design high-efficiency photocatalysts based on metal organic framework materials.

Preparation and selective adsorption of calixarene/reduced graphene oxide fibers

TAO Xuchen, LI Lin, XU Zhenzhen

Journal of Textile Research. 2022, 43(03):  64-70.  doi:10.13475/j.fzxb.20210205807

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In order to enhance the equilibrium adsorption capacity of calixarene fibers for Pt (Ⅱ), calixarene/reduced graphene oxide (CrGO) fibers were prepared through amidation, reduction and electrospinning. CrGO fibers were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, Raman spectrograph and thermogravimetric analyzer. The adsorption selectivity, adsorption kinetics and adsorption isotherm model of CrGO fibers were investigated. The results indicate that CrGO fibers with diameter of (2±0.5) μm possess some wrinkled morphology, low level of microstructure defects and a high thermal stability. In the presence of Na(I) and Hg (Ⅱ), CrGO fibers exhibit selective adsorption for Pt (Ⅱ), which fits with the pseudo second order adsorption kinetic model and Langmuir adsorption isothermal model. The adsorption behavior of CrGO fibers is mainly attributed to monolayer, chemical, endothermic and preferential adsorption. The equilibrium adsorption capacity of CrGO fibers reaches 113 mg/g at the temperature of 293 K for 240 min, which demonstrates an enhancement by 303% compared with calixarene polyimide fibers.

Preparation and performance of chitosan-based antibacterial gel

ZHANG Tao, WANG Fuping, CHEN Guobao, WU Jiyu, PANG Yani, CHEN Zhongmin

Journal of Textile Research. 2022, 43(03):  71-77.  doi:10.13475/j.fzxb.20210305707

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This research addresses the problems of low viscosity and poor antibacterial effect of the chitosan-sodium glycerophosphate system. The chitosan-sodium glycerophosphate system was used as the base material. After sodium carboxymethylcellulose was added to adjust the viscosity, sericin and silk fibroin were added separately to determine the optimal combination to prepare a composite gel. The antibacterial effect, the combination of each component, the antibacterial mechanism, cytotoxicity, and skin irritation of the composite gel were analyzed. The results show that the mixture of the 3% chitosan and 50% sodium glycerophosphate in the volume ratio of 9∶20 together with 1.5% sodium carboxymethyl cellulose demonstrates the moderate viscosity of (68 300±540) mPa·s, which was suitable for external use. When the mass fraction of sericin is 15%, the antibacterial effect of the composite gel is the best, and the antibacterial rate against Escherichia coli and Staphylococcus aureus is (96.20±3.40)% and (86.30±2.51)%, respectively. The gel has a stable structure, and it was found that the composite gel changes the permeability of the bacterial cell membrane, resulting in the inability of the bacteria to proliferate and antibacterial effects, without cytotoxicity and skin irritation.

Textile Engineering

Evaluation of anti-pilling performance of sized yarns based on hairiness image detection

GUO Min, WANG Jing'an, GUO Mingrui, GAO Weidong

Journal of Textile Research. 2022, 43(03):  78-82.  doi:10.13475/j.fzxb.20210701205

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In order to evaluate accurately the hairiness of sized yarns before and after weaving and characterize effectively the anti-pilling performance of sizing, an evaluation method of anti-pilling performance of sized yarns based on image detection of hairiness was proposed. Cotton raw yarns of 14.5 tex and sized yarn with three types of sizing add-ons were studied to simulate weaving load on JN-01 sizing abrasion resistance tester, and abrasion resistance experiments were carried out. Based on image acquisition, yarn evenness segmentation, hairiness segmentation and main abrasion zone positioning, the hairiness index was extracted. The logarithmic function model of sizing hairiness and weaving load was established, and the comprehensive yarn pilling index is constructed based on this model. The results show that the proposed image method can accurately identify the yarn hairiness, and the yarn pilling index can effectively characterize the anti-pilling performance of the sized yarns under various weaving loads.

Design principle and method of double-layer full-color structure with central weft stitching

ZHANG Meng, ZHOU Jiu

Journal of Textile Research. 2022, 43(03):  83-88.  doi:10.13475/j.fzxb.20210304406

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In order to solve the problems of complicated weave structure, simple weave pattern and color, and low design efficiency on double-face jacquard fabrics with central weft stitching, a double-layer full-color structure with central weft stitching was presented based on layer-combination design principle. The research concentrates on methods for coverable weave design, coverable full-color weave design for surface and inner structures, and in particular the central weft stitch weave design. The design method of double-layer full-color structure with central weft stitching was established. The surface and inner structures were designed in the form of single jacquard fabric, and the double-layer structure was accomplished by using particular central weft stitch weaves. The results show that the layer-combination design method simplifies the design process, improves the structural stability, reduces the repair rate of structural design, enhances the design efficiency, and intensifies the color on both sides.

Fast image retrieval of colored spun fabrics on high-level semantic features

GU Qian, YUAN Li, YANG Yali, LIU Junping

Journal of Textile Research. 2022, 43(03):  89-94.  doi:10.13475/j.fzxb.20210310406

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In order to improve the effectiveness and execution efficiency of image retrieval systems for colored spun fabrics, an image retrieval system based on low-order features and high-level semantic features was established. The system uses the deep convolution neural network to extract the style semantic features of colored spun fabrics, and then constructs a hierarchical retrieval system by fusing low-order texture features such as local binary pattern and directional gradient histogram. Binary hash coding was used to reduce the dimension of the extracted high-dimensional feature vector. The results showed that for the retrieval of the 9 sample images of colored spun fabrics with different texture styles, the Top-10 recall and average accuracy of the system reached 97.37% and 87.54%, respectively, indicating good effectiveness and robustness. Compared with the direct use of advanced semantic features, the retrieval time of the proposed method is about 750 times faster.

Torsional mechanical properties and failure mechanism of braided carbon fiber reinforced composite tubes

GU Yuanhui, ZHOU Hongtao, ZHANG Diantang, LIU Jingyan, WANG Shudong

Journal of Textile Research. 2022, 43(03):  95-102.  doi:10.13475/j.fzxb.20210303508

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In order to investigate the effect of layers on the torsional mechanical properties and failure modes of braided composite tubes, the over-braiding process and the vacuum-assisted resin infusion molding process were adopted in preparing 3 types of carbon fiber/resin braided composite tubes with 2, 3 and 4 layers. By setting up a non-contact full-field torsion strain test platform, the torsional mechanical responses of the braided composite tubes with different layers were studied. Using the scanning electron microscopy and microcomputer tomography technologies, the torsion failure mechanism of the braided composite tubes was analyzed. The results show that the braided composite tubes exhibit elastic and brittle fracture characteristics under torsional load, and spatial spiral shear band damage zones through the tube wall are formed. The increase in the number of braided layers promotes the stable spread of stress and strain, and reduces delamination damage of the overall structure. The failure torque of the composite tube with 4 braided layers reaches 450.00 N·m, which is 1.39 times and 2.20 times that of tubes with 3 and 2 braided layers, respectively. The failure modes mainly include fiber fracture or splitting, debonding, matrix cracking or chipping. There is little difference in the types of failure modes at the macro scale. But at the micro scale, the less the number of braided layers is associated to, the more obvious the fiber failure in the tubes.

Dyeing and Finishing & Chemicals

Preparation and performance of allyl polyalkoxy epoxy ether

YANG Zhensheng, WANG Bingshuai

Journal of Textile Research. 2022, 43(03):  103-109.  doi:10.13475/j.fzxb.20200903107

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Targeting at the poor reactive activity in preparing terpolymer block silicone oil caused by high contents of catalyst,potassium and sodium ions in allyl polyalkoxy epoxy ether, the preparation of allyl polyalkoxy epoxy ether without transfer catalyst was studied. The structure of the product was characterized, and the effect of preparation conditions on pH value and epoxy index of the product were analyzed. Terpolymer block silicone oil was prepared from it and was used to soften the fabric. And hydrophilicity, hand feeling, physical and mechanical properties of finished fabric were studied. The results show that when the molar ratio of raw material allyl polyoxyethylene oxide/ECH/sodium hydroxide is 1∶2.5∶1.5 and the amount of glacial acetic acid added is 1.1 times that of excessive base, the epoxy index is 1.77 mol/kg, the pH value is less than 7, and the content of potassium and sodium ions is reduced to less than 5 μg/g after refining. And the fabric has good hydrophilicity after finishing with silicone oil. The capillary effect reaches 7.3 cm and the fabric handle reaches grade 4.7 when the finishing liquid mass concentration is 30 g/L, and the overall performance of the fabric is improved.

Dyeing process for polyester fabrics with continuous pad dyeing method

HE Yingting, LI Min, WANG Ruifeng, WANG Chunxia, FU Shaohai

Journal of Textile Research. 2022, 43(03):  110-115.  doi:10.13475/j.fzxb.20210304906

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In view of the energy consumption and wastewater treatment in the production of polyester dyeing caused by reduction cleaning for color fastness improvement, C.I. Disperse Blue 291 dispersion were prepared and was applied for continuous pad dyeing of polyester fabrics. The influence of dispersing property and particle size of C.I. Disperse Blue 291 dispersion on K/S value of dyed fabric was studied, the influence of adding adhesive, anti-migration agent and penetrant on dyeing effect of polyester fabric was analyzed, the influence of cationic fixing agent on color fastness of dyed polyester fabric was discussed, and the thermal performance and strength of dyed polyester fabric was analyzed. Experimental results show that the levelness, color fastness and K/S value of the dyed polyester fabric is improved, the dyed fabrics exhibit excellent dry rubbing fastness (5 grade), wet rubbing fastness (4-5 grade) and washing fastness (5 grade) as well as significant reduction of chemical oxygen demand (54.7%), the thermal performance and strength of the fabrics are virtually unaffected.

One-bath dyeing of polyester/cotton blended fabrics in supercritical CO₂ with Reactive Disperse Yellow dye

ZHOU Tianbo, ZHENG Huanda, CAI Tao, YU Zuojun, WANG Licheng, ZHENG Laijiu

Journal of Textile Research. 2022, 43(03):  116-122.  doi:10.13475/j.fzxb.20201202108

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In order to solve the technical problems of energy consumption and serious water pollution in polyester/cotton blended fabric water dyeing, dyeing properties of polyester/cotton blended fabrics in the supercritical CO₂ was investigated by using Reactive Disperse Yellow dye in order to expand the application range of supercritical CO₂ dyeing technology. The effect of dyeing temperature, pressure, time, dosage of co-solvent and CO₂ flow rate on the dyeing properties of polyester/cotton blended fabrics was analyzed. The optimized process condition was obtained to be dyeing temperature 100 ℃, pressure 20 MPa, dyeing time 80 min, CO₂ flow 20 g/min and dimethyl sulfoxide (DMSO) dosage 80%. Reactive Disperse Yellow dye could significantly improve color depth and color fastness of polyester/cotton fabrics in comparison with natural dyes. Compared with "ethanol+N-methylpyrrolidone(NMP)" pretreatment, the K/S value of DMSO treatment was increased by more than two times, and the color fastness reached grade 4-5, presenting excellent dyeing effect.

Preparation and performance of composite coated polyester harness cord with high wearability

XIE Kaifang, LUO Fengxiang, BAO Xinjun, ZHOU Hengshu, XU Guangbiao

Journal of Textile Research. 2022, 43(03):  123-131.  doi:10.13475/j.fzxb.20210105609

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In order to explore and optimize the coating process of harness cord and develop harness cord for improved wearability, partially alcoholyzed polyvinyl alcohol (PVA), water-based polyurethane (PU) and epoxy resin (EP) were used as film formers, and two methods were used to coat the braided polyester (PET) harness cord. One-step method used PVA for direct coating, and two-step method used PU/PVA or EP/PVA for composite coating. After drying and heat setting, the apparent morphology, chemical structure, bending properties, tensile properties and wearability of coated harness cord were measured and analyzed to evaluate the effect of PU or EP pretreatment on the mechanical properties of PVA coated harness cord. The results show that both PU and EP can reduce the cracks between PVA coating and PET harness cord. By introducing polar groups on the surface of PET harness cord, the interface performance between the PVA coating and the PET fibers is improved. PU/PVA coated harness cord has better comprehensive properties than that of EP/PVA coated harness cord. The 1.5% PU/PVA coated harness cord demonstrates the best wearability, with an increase of 135.7% compared with PVA coated harness cord.

Preparation and property of composite hydrogel nonwoven based fresh-keeping material

WANG Chenmeizi, WANG Ling, ZHANG Qingle, WANG Ying, XIA Xin

Journal of Textile Research. 2022, 43(03):  132-138.  doi:10.13475/j.fzxb.20210203207

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In order to expand the application of nonwovens as fresh-keeping packaging materials, using sea buckthorn as the raw material for antioxidant fresh-keeping ingredients, a composite hydrogel nonwovens fresh-keeping material was prepared by loading different volume fractions of sea buckthorn extract (SBT) to prepare apocynum nanofibers/chitosan based hydrogels and compounding with polyester nonwovens. The blocking effect, release behavior, antioxidant properties, antibacterial and fresh-keeping performance of the engineered material were analyzed. The results show that as SBT volume fraction increases, the blocking effect of the composite hydrogel nonwoven is enhanced and the oxidation resistance is significantly improved. In the 18 d release test, the maximum cumulative SBT release percentage from the fresh-keeping material under the acidic condition reaches 67.84%, and the width of the inhibition zone against Staphylococcus aureus and Escherichia coli is more than 1 mm, indicating good antibacterial performance. The composite hydrogel nonwoven with 30% SBT has the best comprehensive freshness preservation ability for 9 d.

Preparation of nonwoven composites based on metal-organic frame compounds and removal of hexavalent chromium from wastewater

YU Fan, ZHENG Tao, TANG Tao, JIN Mengting, ZHU Hailin, YU Bin

Journal of Textile Research. 2022, 43(03):  139-145.  doi:10.13475/j.fzxb.20210202107

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To solve the pollution of hexavalent chromium (Cr(VI)) in water, graft modification of Zirconium-based organic frame compound (UiO-66-NH₂) by polyurethane (PU) was proposed. The modified PU/UiO-66-NH₂ was then deposited onto polypropylene (PP) nonwovens to prepare PU/UiO-66-NH₂/PP nonwoven composites, intended for Cr (Ⅵ) adsorption and visible light catalytic reduction. The effect of metal-organic frameworks(MOFs) content on the PU/UiO-66-NH₂/PP nonwoven composites performance and the bonding fastness between PU/UiO-66-NH₂ and PP fabrics were explored, and the performances of the composites for adsorption and photocatalytic reduction of Cr (Ⅵ) were analyzed. The results showed that PU/UiO-66-NH₂ retains the original topology of UiO-66-NH₂, and when the UiO-66-NH₂ content was 20%, PU/UiO-66-NH₂/PP nonwoven composites present good adsorption performance for Cr (Ⅵ). The PU/UiO-66-NH₂/PP nonwoven composites have no obvious mass loss after different time ultrasonic washing, indicating good bonding fastness between PU/UiO-66-NH₂ and PP fabrics. Under visible light, PU/UiO-66-NH₂/PP nonwoven composites are both adsorbent and photocatalyst. Meanwhile, the composites show good performance after reutilization for 4 times.

Apparel Engineering

Cost rapid accounting technology of dress based on element matching

XIA Ming, LI Peiru, DING Rong

Journal of Textile Research. 2022, 43(03):  146-152.  doi:10.13475/j.fzxb.20210403007

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In order to improve the ability of enterprises to quickly calculate clothing cost, the methods of cost calculation and similarity matching of clothing was studied. Firstly, calculate the similarity between the same elements based on the dress elements extraction and quantification; Secondly, calculate the sample similarity by using weighted Euclidean distance and take the largest similarity sample cost as dress sample cost. At the same time, Euclidean distance calculation and BP neural network calculation were set up for comparison. The results show that the matching effect of weighted Euclidean distance calculation is the best. The average error of face cloth cost, lining cost and clothing processing cost calculated by weighted Euclidean distance is 7.44%, 8.90%, 6.11%, which meet the accuracy requirement for enterprise cost accounting.

Influence of structural parameters of stand collar on clothing styling

WANG Chunru, YUAN Yue, CAO Xiaomeng, FAN Yilin, ZHONG Anhua

Journal of Textile Research. 2022, 43(03):  153-159.  doi:10.13475/j.fzxb.20210405007

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In order to improve the fit and aesthetics of stand collar styling, explore the relationship between the structural parameters of stand collar and clothing styling and establish their theoretical models, 64 stand collar designs were created with different collar heights, extent of warpage and collar rotation angles. By using virtual fitting technology, the transformation from two-dimensional design to three-dimensional design was completed. The stand collar styling parameters were measured, and the data was subjected to correlation analysis, partial correlation analysis, and regression analysis. The results show that there is a linear relationship between the styling parameters and the structural parameters of the stand collar. Collar height is correlated with 7 styling parameters including the collar depth, and the extent of warpage is related to the length of the top neckline. The rotation angle on the other hand is correlated with the 4 styling parameters such as the front neck allowance, whereas the stand collar fits better when an increased rotation. The regression model of structural parameters and styling parameters was obtained, which was used to design the stand collar structure, and the structural parameters can be quickly adjusted to obtain different stand collar styles.

Machinery & Accessories

Research on integrated design method of robot intelligent joint drive and control structure

MO Shuai, ZHOU Changpeng, LI Xu, YANG Zhenning, LIU Huihua, GAO Hanjun

Journal of Textile Research. 2022, 43(03):  160-167.  doi:10.13475/j.fzxb.20210402708

Abstract ( 278 )   HTML ( 10 )   PDF (4740KB) ( 79 )   Save

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In order to reduce the space occupied by textile robot and to improve its control performance, a new type of textile robot waist joint used for doffing management was designed, which used a brushed DC motor as the power source, STM32F103T8U6 as the main control chip, and L9110S as the driving chip. The magnetic encoder AS5600 and a magnet installed at the end of the output shaft was used together to generate the Hall effect to facilitate the speed and position detection of the robot joint. By comparing the corresponding speed and current of the single-speed closed-loop control with that of the double closed-loop control, this research adopted the speed and current double closed-loop proportional integral (PI) control system for speed regulation in the control algorithm, and the controller area network (CAN) bus method was used to achieve signal transmission so as to reduce the complexity of multi-joint wiring. The experimental results show that the designed robot can effectively reduce the joint volume with the miniaturization design, and has a wider range of use. Compared with the single closed-loop control system, the double closed-loop control system shortens the steady-state time by 30%.

Effect of yarn's initial position on yarn tucked-in in pneumatic tucked-in selvedge apparatus

LIU Yisheng, ZHOU Xinlei, LIU Dandan

Journal of Textile Research. 2022, 43(03):  168-175.  doi:10.13475/j.fzxb.20210203109

Abstract ( 214 )   HTML ( 4 )   PDF (3733KB) ( 68 )   Save

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In order to improve the structural design of the pneumatic tucked-in selvedge apparatus and increase the yarn tucked-in efficiency and stability, a combination of numerical simulation and experiment is used to explore the mechanism of the yarn's initial position on the yarn tucked-in. Based on the one-way weak fluid-structure interaction algorithm, a numerical model suitable for simulating the behavior of a yarn from oblique-blowing to tucked-in is proposed and the movement of a single yarn with one end fixed and the other free end in different initial positions being subjected to oblique-blowing and tucked-in sequence is explored. A visual experimental bench was built to record the movement of the yarn through a high-speed camera. By comparing the results of numerical simulation with experimental data, the accuracy of the one-way weak fluid-structure interaction algorithm is verified. The results show that: the time and the elongation of the yarn tucked-in are related to its initial position, and the tucked-in effect of the yarn is related to its initial ordinate. The yarns in different initial positions can all tucked-in within 7.425 ms.

Mathematical modeling and dynamic simulation of air conditioning system in spinning workshop

JI Jie, HAN Yunlong, GAO Jie, WANG Huming, LU Biao

Journal of Textile Research. 2022, 43(03):  176-184.  doi:10.13475/j.fzxb.20210104909

Abstract ( 275 )   HTML ( 18 )   PDF (4124KB) ( 89 )   Save

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In order to study the dynamic change of temperature and humidity in spinning workshop and provide operation platform for the automatic control strategy of air conditioning system, the models of spray chamber and spinning workshop were established respectively on the basis of heat, moisture and air-volume balance. The dynamic simulation platform of spinning air conditioning system was developed by Python and PyQt5 which support business logic programming with developed graphical user interface. The fresh air control strategy of dew point was established, and the automatic control of the temperature and humidity in the workshop was achieved based on the proportional integral derivative(PID)control algorithm. Taking the structure, process and air conditioning equipment of a spinning workshop as the basic parameters and boundary conditions of the simulation platform, the temperature and humidity changes in the workshop after changing the control parameters of air conditioning equipment were simulated. The results show that the simulation platform of air conditioning system of the spinning workshop is useful to adjust and control the air conditioning equipment. It can calculate the machine dew point of spray chamber, the changing value of the temperature and humidity, and the response time when the temperature and humidity are stable to the set temperature and humidity for the workshop. The simulation platform of spinning air-conditioning system has the virtual operation environment of a spinning workshop, which can be used to study the control strategy of the air-conditioning system.

Information model of sweater production workshops based on OPC unified architecture and its application

JIN Guiyang, CHEN Gang, SUN Pingfan

Journal of Textile Research. 2022, 43(03):  185-192.  doi:10.13475/j.fzxb.20210200608

Abstract ( 267 )   HTML ( 4 )   PDF (4631KB) ( 53 )   Save

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In order to facilitate information communication between different systems of sweater production digital workshops, and an interconnected network architecture for sweater production digital workshops based on OPC unified architecture (UA) was proposed aiming at the interaction of relevant production information at different levels of the enterprise during the sweater production process. Based on the object model of ISA 95 standard and OPC UA modeling technology, a standard information model of sweater production digital workshops was constructed. The model structure, static attribute set, process attribute set and function component set were described and defined. Taking the computerized flat knitting machine as an example, a representative model, instantiation and information interaction between workshop systems were presented. Based on the proposed interconnected network architecture and the standard information model, the interconnection and interoperation among all levels of systems in sweater production digital workshops were achieved, tackling the problem of heterogeneous and fragmented information.

Comprehensive Review

Pollution of fibrous microplastics and its influencing factors

CUI Panpan, ZHANG Jingjing, XU Rongwei, WANG Songlin, DUAN Xiaoping, LI Guang

Journal of Textile Research. 2022, 43(03):  193-200.  doi:10.13475/j.fzxb.20210808808

Abstract ( 385 )   HTML ( 24 )   PDF (1322KB) ( 172 )   Save

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Laundry washing and wearing of synthetic fiber clothing is an important way to produce fibrous microplastics.In order to reduce such pollutant, it is important to understand the release of fibrous microplastics and its influencing factors. Based on studies on the release of fibrous microplastics in the process of washing and wearing, from the aspects of releasing pathway, stage and influencing factors of fibrous microplastics, this article introduces the production and release of fibrous microplastics in the process of washing, drying and wearing, as well as the impact to the environment. By correlating the release amount of fibrous microplastics with the abrasion resistance of fabrics, the mechanism for fibrous microplastics to release from clothing was revealed. Moreover, several current strategies for inhibiting or intercepting the release of fibrous microplastics from clothing were introduced. It is revealed that the pollution of fibrous microplastics has become a problem that can not be ignored. Using different methods to reduce the release of fibrous microplastics from different ways is of great significance to the ecological environment and human health.

Research progress in nanofiber supported nano zero-valent-iron based materials in environmental remediation

JIN Xu, LIU Fang, DU Xuan, HUA Chao, GONG Xuzhong, ZHANG Xiuqin, WANG Bin

Journal of Textile Research. 2022, 43(03):  201-209.  doi:10.13475/j.fzxb.20201104309

Abstract ( 329 )   HTML ( 17 )   PDF (1898KB) ( 87 )   Save

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Nano zero-valent-iron (nZVI) composites are associated with defects such as easy agglomeration and difficulty in separation and recovery, which lead to declined degradation efficiency and reduced service life. The preparation methods of nZVI and the latest research results of nZVI based materials in the field of soil and water pollution control were introduced. The reaction principle of nZVI to remove pollutants was discussed and analyzed. The preparation methods and pollutant removal effects of nanofiber supported nZVI based materials such as membranes made from polyacrylic acid/polyvinyl alcohol (PVA) composite nanofiber, chitosan composite nanofiber, polyaniline nanofiber and carbon nanofiber were summarized respectively. The progress review revealed that the carrier material in the form of electrospun nanofibers can effectively inhibit the agglomeration of nZVI, improve the separation and recovery performance and broaden the practical application scope. Nanofibers are shown as a new effective carrier to load nZVI based materials for environmental remediation.