Table of Content

15 May 2011, Volume 32 Issue 5

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Synthesis of Poly(trimethylene terephthalate) With Low-melting Point

CUI Lian-Chen CUI;JIANG Chang-Ming JIANG;lV Wang-Yang lV;WANG Xiu-Hua WANG;HUANG Zhi-Chao HUANG

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  1-4. 

Abstract ( 1986 )   PDF (282KB) ( 562 )   Save

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Isophthalic acid (IPA) was used to modify poly(trimethylene terephthalate) to obtain a series of poly(trimethylene terephthalate-co-trimethylene isophthalate) (PTTI). The effects of different molar ratios of IPA to TPA on the melting temperature (Tm) of poly(trimethylene terephthalate-co-trimethylene isophthalate) (PTTI) were investigated by Differential Scanning Calorimetry (DSC). The experimental results indicated that the crystallinity and the melting temperature obviously decreased with the molar ratio of IPA to TPA increasing. In order to improve the crystallinity, PEG were imported at the polycondensation stage to obtain PTTI-PEG, characterized by Differential Scanning Calorimetry (DSC), 1H Nuclear Magnetic Resonance (1H-NMR), Thermogravimetric Analysis (TG) and Wide Angle X-ray Diffraction (WAXD).

Study on water soluble PBT and Microfibers

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  5-9. 

Abstract ( 1415 )   PDF (490KB) ( 549 )   Save

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Abstract: The water-soluble polybutylene terephthalate (WSPBT) was prepared through adding other modified monomer when synthesizing the polybutylene terephthalate (PBT). This WSPBT can be crystallization easily and can dissolution in the boiling water. The existence of SIPE was proved by the FTIR analysis. The thermo-gravimetric analysis(TGA) shows that the WSPBT has good thermal stability. The island-in-sea fiber which composed with WSPBT and common PET was prepared through composite spinning. The island-in-sea fiber were set in boiling water about 45 minutes, then water-soluble property of WSPBT can be tested. The relationship of SIPE content in WSPBT and water-solubility property was discussed.

Cold Plasma-induced Graft Polymerization of Acrylic Acid onto Polypropylene Film in Vapor Phase

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  10-15. 

Abstract ( 1797 )   PDF (872KB) ( 619 )   Save

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Polypropylene (PP) film was treated by cold plasma and followed by a vapor phase graft polymerization of acrylic acid (AAc). It was found that 15 minutes grafting was sufficient enough to decrease the water contact angle (WCA) of PP film from 97 to 32, which indicates a great improvement in its hydrophilicity. FTIR-ATR study confirmed the grafting of AAc on PP film. SEM observation clearly showed many bump-like substances in the size of around 1-2m. This modified hydrophilicity kept very well even after washing the grafted sample in boiling water for 10 minutes, which indicates that the ageing effect of merely plasma-treated PP film was overcome. By investigating the effect of reaction time and temperature on the degree of grafting, an optimum condition was found as grafting for 15min at 55C. Under the optimum condition, the degree of grafting and WCA of grafted sample reached 0.45% and 32, respectively. It was thought that this fast and effective method of graft polymerization in vapor phase could provide a strong experimental support to develop corresponding industrial applications in the field of surface modification.

Numerical simulation on the three dimensional flow field of Fiber filter media

fu hai-ming

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  16-21. 

Abstract ( 1425 )   PDF (1433KB) ( 393 )   Save

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The optimization of the fiber filter media’s internal structural parameters is crucial to improving the filtering performance. A series of three-dimensional structure of the fiber filter media, where cylindrical fibers are random arrangement, staggered arrangement and alignment arrangement,was created with computer technology. And the gas flow fields with different SVF, different face velocity and different fibrous arrangement are presented. Three dimensionless pressure drop expressions corresponding to the three kinds of fiber filter media were obtained. There have a good agreement between the CFD simulations and the Davies’s equation. The results indicate: the pressure drop increases linearly with the face velocity; but it increases non-linear with the SVF; The pressure drop of these three types of fiber arrangement by size is staggered arrangement, alignment arrangement and random arrangement respectively.

Pyrolysis kinetic of cellulose and hemicellulose fractions isolated by Mucuna sempervirens Hemsl.

XIE Tao

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  22-28. 

Abstract ( 1806 )   PDF (440KB) ( 472 )   Save

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Thermal characterizations of four fractional celluloses and hemicelluloses isolated by alkaline hydrogen peroxide from defatting Mucuna sempervirens fiber were studied. Thermal gravimetric (TG) experiments determined the initial decomposition temperature (Tdi), maximum decomposition (Tdm), final decomposition (Tdf) and caput mortuum amount of four fractional celluloses and hemicelluloses. Differential scanning calorimetry (DSC) analysis demonstrated that thermal decomposition of four fractional celluloses and hemicelluloses includes the five phases of ice crystals melt, water endothermic evaporation, fusing, thermal pyrolysis and final hard coke thermolysis during the scanning range between -50℃ and 550℃. Moverover, the onset temperatures (TOS), peak temperatures (TPS), end temperatures (TES) and endothermic enthalpies of their fusing and thermal pyrolysis endothermic peak were also measured. The Kissinger equation was successfully applied to describe the thermal decomposition process of four fractional celluloses and hemicelluloses. The kinetic parameters of apparent activation (E) and reaction order (n) were obtained, respectively.

Structure and properties of polyacrylonitrile / Ca-montmorillonite nanocomposite fiber

Jie YU

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  29-32. 

Abstract ( 1562 )   PDF (477KB) ( 535 )   Save

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The polyacrylonitrile / Ca-montmorillonite (Ca-MMT) nanocomposite fiber was prepared via solution blending. The TEM observation and X-ray diffraction result suggested that the Ca-MMT layers were exfoliated and well dispersed in the polyacrylonitrile matrix. It was found that the polyacrylonitrile / Ca-MMT nanocomposite fiber exhibited considerably enhanced mechanical property compared with the polyacrylonitrile fiber without nano Ca-MMT. Also, it was found that the Ca-MMT content should be 1wt%, to show excellent tensile strength.

The fractal analysis of wool setting principle

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  33-37. 

Abstract ( 1281 )   PDF (394KB) ( 380 )   Save

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The setting principle of wool is very complex，it is now generally accepted the explanation of chemical setting theory from the micro perspective of molecular, while neglecting the effect on shape-setting caused by interaction between the fiber assembly . This paper uses fractal theory, from the macro-perspective view of interaction between fiber and fiber to analysis the principle of wool setting, given out the fractal dimension analysis and the multi-fractal spectrum analysis of setting principle. On the one hand, deeply theoretical analyzing can provide theoretical guidance for production practices and setting processes of optimization; on the other hand, the fractal phenomena in production and living also provide a wide range of realistic material for the development of fractal theory. The multi-fractal spectrum theory of fractal is even first used in textiles.

Analysis of three basic parameters of the false-twist compact spinning method

FU Jiang

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  38-42. 

Abstract ( 1621 )   PDF (231KB) ( 471 )   Save

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The false-twist compact spinning method was suggested to improve the quality of cotton ring spinning yarn. A series of spinning experiments were conducted to investigate the influences of drafting systems, rotational speed ratio and rotational direction of the false twister on yarn evenness, hairiness index, breaking strength and breaking elongation. The results showed that the yarns produced on the double-apron drafting system have better qualities than that produced on the simple three-roller drafting system. The rotational direction should be adjusted according to the twist direction of the roving. The twist direction of the roving used in the experiment is “Z” twist, so the rotational direction should be counterclockwise. The experiment results also indicated the determination of rotational speed ratio should be based on other spinning parameters. When the rotational direction of the false twister is counterclockwise, the optimum rotational speed ratio is 0.36. When the false twister runs clockwise, the rotational speed ratio should be higher to improve yarn quality.

A Algorithm for Segmentation of Interlacing Fibers

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  43-49. 

Abstract ( 1327 )   PDF (624KB) ( 381 )   Save

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The number of fibers in sample must be obtained to determine diameter of fiber and blending rate of sample. In order to do this automatically a fiber scatter should first be introduced to make fibers interlaced together as less as three. Then image process is employed to distinguish individual fiber. The paper introduced this image process method. First, the edge of interlacing fibers is extracted. Second, the slope angle of tangent at the individual point of edge is calculated to form a curve of slope angle. This curve is wavelet transformed and the dots at the end of fiber are removed because sharp change occurs in the curve. The fiber edge can be restored from the remained dots by Hough transform. These edges are sort out to figure out the amount of interlacing fiber and also diameter of fibers. Experiment shows the accurate is high enough for standards involved.

Anti-light discoloration properties of natural fiber textiles composition

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  50-56. 

Abstract ( 1412 )   PDF (1462KB) ( 463 )   Save

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For the problem of color been changed easily and complex stress issues of natural fiber fabric composite under practical working environment, anti-light color and mechanical properties under biaxial load was studied for three kinds of resin matrix composite ,and strain filed were characterized by using digital speckle correlation.The results showed that: both water-based epoxy resin plate and isocyanate resin plate showed orthotropy and elastoplasticity, while the performance of phenolic resin board is linearity and simultaneous brittle -fracture on both X and Ydirection ;biaxial value loading difference is related to the orthotropy; load changes in fracture direction have a negative impact on other direction at the moment of breaking and impact degree has a positive correlation with the loading values in fracture direction.Under Linear elastic stage，load and average strain atY direction are larger than X direction within the same test area at timebucket, for isocyanate and phenolic resin plate the strain filed at X / Y direction changes more smoothly than water-based epoxy resin plate. Anti-light color properties for phenolic resin plate is better than others, and light stability on apparent color for isocyanate plate has been enhanced by boiling and alkali treatment.

The mechanical properties of the polypropylene spun-bonded fabric modified by Inorganic powder carbonate

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  57-62. 

Abstract ( 1384 )   PDF (764KB) ( 488 )   Save

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The inorganic powder of calcium carbonate and polypropylene (PP) were mixed to a scale before using the 1600mm width of spunbond non-woven machines to obtain PP spunbond nonwoven fabric. The article has studied the relation between Inorganic powder calcium carbonate ratio and Fiber structure and the mechanical properties of this PP spunbond nonwoven. The results show that: When the inorganic powder calcium carbonate ratio is smaller and the square weight of PP spunbond non-woven fabric is higher, there is an increasing trend in breaking strength. When the square weight is smaller, the breaking strength presented a downward trend with the calcium carbonate content increasing. In small deformation, the addition of calcium carbonate make a slight improvement in initial modulus of the modified PP spunbond non-woven fabric .and average diameter of PP fibers present a upward trend. With the content increasing of inorganic calcium carbonate powder, the pliability of PP spunbond non-woven fabric is decreasing gradually.

Test and evaluation for permeable performances of size paste

GUO Lamei

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  63-66. 

Abstract ( 1455 )   PDF (185KB) ( 389 )   Save

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In this paper, permeable performances of size paste into warp were attempted to test and to evaluate by warp sedimentation method. The factors such as viscosity, temperature, pH value, penetrating agent, are studied with relation to warp sedimentation time. As a result, permeable performance was characterized well by warp sedimentation method when size paste was low viscosity. Permeable performance was greatly improved by using penetrating agent which did not change the viscosity of the size paste.

Research on the Amino Plasticizers for Starch Sizing Agents

LI Wei

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  67-70. 

Abstract ( 1398 )   PDF (126KB) ( 397 )   Save

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Effect of some amino substances used as plasticizers on the plasticization of starch sizing agents was investigated in terms of paste viscosity, viscosity stability, adhesion-to-fibers, and starch film behaviors. The plasticizers evaluated included aniline, ethanolamine, urea, etc. Superior plasticizer was found through control test, and the content was also determined. The experimental results demonstrated that the plasticizers could improve the fragility of starch film because breaking elongation and flex resistance of the film increased and wear loss decreased. However, tensile strength of the film decreased with the increase of plasticizer content. It was recommended that ethanolamine should be used for plasticizing starch with a content of 6%～9% based on dry weight of starch.

Characterization of starch by dual role of 60Co-γ ray and microwave irradiation

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  71-73. 

Abstract ( 1099 )   PDF (186KB) ( 354 )   Save

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Preparation of radiation modified starch by double irradiation of 60Co-γ ray and microwave. To test the gelatinization temperature and solubility of radiation modified starch, compared with the corn native starch and H2O2 oxidized starch, modification with γ radiation and microwave can also improve the gelatinization temperature and solubility of starch, and lowering the viscosity. Were determined the content of amylose and amylopectin with Butanol Sedimentation, the results show that, the degradation rate of amylopectin was 30.9 %. So the starch to exist as the main linear amylose after γ radiation and microwave, better able to dissolve in hot water for the formation of true solution.

Study on the Cationic Modification and Dyeabilities of Jute/Cotton Blended Fabric

WANG Wei-Ming

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  74-79. 

Abstract ( 1748 )   PDF (308KB) ( 498 )   Save

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In order to improve the dyeability of jute/cotton blended fabric and achieve low salt and low alkali dyeing with reactive dyes. The cationic modification and dyeabilities of jute /cotton blended fabric were studied in this paper. The results showed that the optimum modification conditions were as follows: Glytac 40 g/L, sodium hydroxide 8 g/L, JFC 2 g/L, temperature 60 ℃, time 45 min and fiber to liquor ratio1︰20. It also can be seen from the results that Glytac modification could reduce the dosage of electrolyte salt and alkali during the reactive dyes dyeing process and the dyeing temperature, increase dye utilization percentage, improve washing fastness and rubbing fastness. And there is no effect on light fastness.

Mechanism of Benzyl Alcohol on Acrylic Fiber Dyeing with Cationic Dye

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  80-85. 

Abstract ( 1868 )   PDF (458KB) ( 505 )   Save

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Abstract: The purpose of this research was to reduce dyeing temperature of acrylic fiber, the acrylic yarn was dyed till equilibrium with pure Cationic Turquoise Blue X-GB under the conditions of benzyl alcohol leather dyeing or not at 85℃ and conventional dyeing. The influence of benzyl alcohol on the dyeing mechanism of acrylic fiber with cationic dye was analyzed through kinetics and thermodynamics studies. The results have shown that increasing dyeing temperature and adding benzyl alcohol both can improve the equilibrium adsorption amount of acrylic fibers, dyeing rate constants, diffusion coefficients and activation energy for acrylic fiber dyeing with cationic coroba blue X-GB.The adsorption isotherm obtained was identified to be a Langmuir type. When the temperature increased and benzyl alcohol added the partition ratio and the standard affinity and the adsorption saturation value increased drastically. The paper has achieved the 85 ℃ dyeing of acrylic fiber using benzyl alcohol , which can effectively increase the dye adsorption of acrylic fiber and reduce the damage of fiberbecause of the high temperature dyeing.

Role and application of environmental friendly dyeing carrier OE in low temperature dyeing of polyester fiber

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  86-90. 

Abstract ( 2486 )   PDF (435KB) ( 748 )   Save

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For decreasing dyeing temperature, realizing energy-saving and environmental-friendly low temperature dyeing of polyester fibric, the dyeing performance and process of environmental friendly carrier OE were investigated. The results showed that carrier OE had plasticizing effect for polyester fiber and could effectively lower dyeing temperature of polyester fiber, when polyester fibrics were dyed at 98℃, the addition of carrier OE into dye bath can improve dyeing rate and dye uptake percentage obviously, carrier OE had good migrating property. When dye amount is 2% (o.m.f), the optimum carrier amount is 6% (o.m.f), dyeing temperture is 98℃, and holding time is 80min, carrier dyeing can obtaine consistent color fastness, similar colour feature with high temperature and pressure dyeing.

The Research about the Padding-steaming Anti-crease Finish to Cotton Fabric in the Mosit State

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  91-94. 

Abstract ( 1869 )   PDF (118KB) ( 424 )   Save

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An padding-steaming anti-crease finish in the moist state has been studied in this article in order to reduce the damage to the breaking strength and whiteness in the cotton fabric’s traditional padding-baking anti-crease finish process. Some factors such as the concentration of polymaleic acid and catalyst, the temperature and time of steaming, which influenced the wrinkle recovery angle, breaking strength and whiteness, have been discussed. Compared with the general padding-baking anti-crease finish process, the mosit anti-crease finish process could not only obtain the equivalent anti-crease propety but also be superior to padding-baking process in other property indexes such as breaking strength and so on.

The study of the Womens′ shoulder based on 3-D body measurement

WANG Hong-Fu

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  95-97. 

Abstract ( 1564 )   PDF (106KB) ( 723 )   Save

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The shoulder is the fitting area between the human body and the clothes,so it is a important spot in structural design of the clothes,and is also a site for better fitting requirement. In order to improve the fit of clothing shoulder, obtaining the data of related to the shoulder area based on 3D body measurement,then use the spss software to analyze the date. Firstly, classify the variables and then identify the characteristics of the shoulder area, according to calculate the features index in each cluer. Determine shoulder and right shoulder angle are the feature site. Then analyze the datas of the feature site, get the introduction to value distribution of the shoulder and the right angle for the young women aged 20 to 24. About 84.75% of people,s shoulder is distributed between 36.0 cm to 37.8 cm, and approximately 79.661% of people,s right shoulder angle is distributed between 22.0 ° to 27.3 °.

Effects on Cardiovascular Physiology by Clothing Pressure on Human Neck

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  98-102. 

Abstract ( 1397 )   PDF (341KB) ( 457 )   Save

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In order to study the effects on cardiovascular physiology associated with clothing pressure on human neck, fifteen females were chosen as study subjects. Pressure values of different collar width of high neckline knit shirts were measured. Data of heart rate and blood pressure of each subject were collected in static-dynamic-static state by step test for objective evaluation. The results showed that clothing pressure was correlated with heart rate and blood pressure, and all physiological indicators revealed a remarkable downward trend when the pressure on human neck exceeded 1.2Kpa. Pressure on the neck had the most significant negative impact on cardiovascular system when taking exercises. Pressure on the neck showed more significant effects on systolic blood pressure than diastolic blood pressure in different wearing states, and overpressure would affect human blood pressure recovery after exercises.

Analysis on Acting Forces in the Armhole Structure of Mans Suit

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  103-106. 

Abstract ( 1463 )   PDF (256KB) ( 658 )   Save

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In mans garments, suit is the most major style. The armhole structure is one of the most complicated parts for mans jackets. Under different structures, the armhole shapes show quite a lot variation. The shape form patterns also have a direct impact on snugness of fit and moulding in shoulder and sleeve parts. The project study aims to analyze different structural configurations and principles of deformation under different structural configurations. This study has partial experiments on just making armhole part, then measures it to collect the data. It sets up the mechanical model and theoretically discusses inner stress forms caused by armhole deforming and calculates the intensity which armhole can bear. Finally the study proposes a best configuration scheme, which can achieve not only graceful outlines of shoulder and sleeve parts but snugness of fit. This study provides the theoretical guide for standardized production of man’s suits.

Clothing structural design with diversified wearing methods

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  107-111. 

Abstract ( 1364 )   PDF (732KB) ( 547 )   Save

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To solve contradiction between the mass production of contemporary apparel and clothing individual consumption, three types of clothing construction are summarized with the review of costume construction techniques having been explored by humans through long-term. They are the wrapping, draping and covering construction methods. The shape characteristics of the clothing are analysed which are made through these three construction methods. Basing on the principles of clothing construction, the final series of apparel are produced through relevant experiments. The construction methods are developed integrating the advantages of three principles of clothing construction. The pieced of clothing are formed with stability structure, diversified wearing methods and can be mass produced. It can solve the contradiction between the mass production of contemporary apparel and clothing individual consumption.

Practice Exploration of Fashion Trend Forecast in chinese high education

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  112-117. 

Abstract ( 1067 )   PDF (1187KB) ( 398 )   Save

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The Research of Automatic Checkout Methods for Ree of Ripeness of Mucilage Glue

GAO yan;AI Xue-zhong;BAI Xia;ZHANG Lian-jia

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  118-120. 

Abstract ( 1763 )   PDF (268KB) ( 679 )   Save

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Abstract The article takes the checkout methods of ree of ripeness of mucilage glue as object in chemical fiber manufacture.The automatic checkout device, used C8051F410 system on chip as the core,designed for the ree of ripeness of mucilage glue, focuses on the stir motor’s constant speed controling through the test process, the management and detection of titration of NH4C1 liquor, the measurement of risistance of stir, and the judgement of the titration destination. In addtion, it has been compared with the traditional checkout methods on mucilage glue,and also analysed the result. The consequence suggests that, the automatic checkout method for the ree of ripenness of mucilage glue presented in this article has high accuracy, and the results are coincided with experimental data, which has profoundsignificance for enhancing the degree of automation chenckout of the ree of ripeness of mucilage glue in chemical fiber manufacture.

Optimized design of the needle bar mechanism

ZHAO Fu

JOURNAL OF TEXTILE RESEARCH. 2011, 32(5):  126-129. 

Abstract ( 1553 )   PDF (318KB) ( 431 )   Save

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This paper will carry on a dynamic simulation about the needle bar mechanism by creating the parameterized model based on ADAMS. Through function of design study, two variables can be acquired in the process of computing each variable’s sensitive for slide’s translational kinetic energy . Using optimization of ADAMS and taking the magnitude of kinetic energy as objective function, optimization values of the two selected variables are calculated which minimize the value of objective function. Then these two optimized variables will be used as design dimension and finally optimize the needle bar mechanism.