Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (05): 18-23.doi: 10.13475/j.fzxb.20180503207

• Fiber Materials • Previous Articles     Next Articles

Structure and liquid retention properties of polyethylene glycol/ polypropylene melt blown nonwoven with bionic vein networks

ZHANG Heng1,2, SHENTU Baoqing1(), ZHANG Wei2, ZHANG Yifeng2, CUI Guoshi3   

  1. 1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
    2. School of Textiles, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    3. Henan Kegao Radiation Chemical Technology Co., Ltd., Luoyang, Henan 471000, China
  • Received:2018-05-14 Revised:2018-12-11 Online:2019-05-15 Published:2019-05-21
  • Contact: SHENTU Baoqing E-mail:shentu@zju.edu.cn

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Abstract:

In order to study the bionic vein networks structure and liquid retention properties of polyethylene glycol (PEG)/polypropylene (PP) melt blown nonwovens, the microfiber nonwovens were prepared from PEG and PP blends by melt blowing. The structure including fiber diameter distribution, the quantity density of different diameter fibers, and properties of evaporation rate and retention capacity were investigated. The results show that three kinds of fibers with diameter of smaller than 800 nm, 800-2 000 nm and larger than 2 000 nm are staggered in horizontal direction, forming three level branching networks with asymmetric characteristics. Third branched networks composed of fibers smaller than 800 nm can be adjusted by increasing the PEG ratio and die temperature. The special length is linearly and positively correlated with the die temperature. The evaporation rate of the samples with bionic vein networks accord with the law of textile materials, showing that with the increasing of PEG ratio from 0% to 15%, the liquid retention capacity decreases from 1 938.3% to 1 313.1%.

Key words: polyethylene glycol, polypropylene, nonwoven, bionic, vein branched network, liquid dispersion

CLC Number: 

  • TS167

Fig.1

SEM images (a) and branching structure distribution (b) of fiber"

Fig.2

SEM images of samples with different PEG contents"

Fig.3

Branch number of fibers varying with PEG percent (a) and die temperature (b) in different diameters"

Fig.4

Curves of branch density varying with PEG percent (a) and die temperature (b)"

Fig.5

Evaporation rate of samples varying with time"

Fig.6

Liquid retention of samples varying with PEG percent (a) and die temperature (b)"

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