Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (07): 17-21.doi: 10.13475/j.fzxb.20210404505

• Fiber Materials • Previous Articles     Next Articles

Preparation and properties of normal pressure-anionic dyeable polypropylene fiber based on polyionic liquid

LIANG Jiaojiao1,2, WANG Jingjing1,2, XIA Yumin1,2,3,4(), ZHU Xinyuan3, YAN Bing4, SUN Liming4, WANG Yanping1,2, HE Yong5, WANG Yimin1,2   

  1. 1. Engineering Research Center of Technical Textile, Ministry of Education, Donghua University, Shanghai 201620, China
    2. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
    3. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
    4. Zhejiang Hongji Petrochemical Co., Ltd., Jiaxing, Zhejiang 314200, China
    5. Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
  • Received:2021-04-16 Revised:2021-11-16 Online:2022-07-15 Published:2022-07-29
  • Contact: XIA Yumin E-mail:xym@dhu.edu.cn

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Abstract:

In order to prepare anionic dyeable polypropylene fiber, a type of cationic polyionic liquid was designed and synthesized, and its compatibility with the polypropylene blend system was studied. The blended system was spun into yarns by melt spinning method, and its mechanical properties and dyeing properties were investigated. Results show that the blending system of polypropylene and polyionic liquid has good compatibility. The addition of polyionic liquid reduces the degree of crystallinity and orientation of polypropylene, which makes the modified polypropylene fiber more favorable to combine with the dye. Dyeing experiment on the modified fiber showed that the dyeing rate and the dyeing depth of the fiber reaches 17.0% and 5.450 3 respectively. The breaking strength of the modified fiber is 4.4 cN/dtex, which meets the requirements for textile processing.

Key words: polypropylene fiber, polyionic liquid, compatibility, blending spinning, normal pressure-anionic dyeablility

CLC Number: 

  • TQ342

Fig.1

NMR hydrogen spectra of PIL-Cl/DBS"

Fig.2

Optical microscope (a) and SEM (b) images of PP and PIL-Cl/DBS blends"

Fig.3

DSC curves of PP and PIL-Cl/DBS blends. (a) Heating curve; (b) Cooling curve"

Fig.4

Contact angle diagrams of PP(a),PP and PIL-Cl/DBS blends(b)"

Tab.1

Mechanical properties of PP fibers before and after modification"

纤维类型 断裂强度/(cN·dtex-1) 断裂伸长率/%
PP纤维 5.1 24.0
改性纤维1 5.1 16.9
改性纤维2 4.4 19.3

Tab.2

Crystallinity and orientation of PP fibers before and after modification%"

纤维类型 结晶度 取向度
PP纤维 49.5 91.9
改性纤维1 48.1 91.5
改性纤维2 47.5 91.3

Fig.5

Dyeing effect diagram of PP fibers before and after modification. (a)PP fibers;(b)Modified fiber 1; (c)Modified fiber 2"

Tab.3

Dyeing depth of modified PP fibers"

纤维类别 K/S值 L值 C值
改性纤维1 4.000 7 30.95 22.22
改性纤维2 5.450 3 43.13 24.25
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