Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (11): 75-80.doi: 10.13475/j.fzxb.20180800907

• Textile Engineering • Previous Articles     Next Articles

Composition analysis and stripping process of waste wool/silk/cotton blended fabric

TU Li, MENG Jiaguang(), LI Xin, LI Juanzi   

  1. College of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
  • Received:2018-08-03 Revised:2019-08-09 Online:2019-11-15 Published:2019-11-26
  • Contact: MENG Jiaguang E-mail:mengjiaguang@126.com

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Abstract:

In order to improve the utilization rate of waste textiles and reduce the influence of dyes on recycling methods and processes, the compositions of waste blended fabrics were analyzed. The fabric was stripped by an hydrogen peroxide/citric acid system. The stripping process was optimized by a single factor method. The influences of hydrogen peroxide mass concentration, citric acid mass concentration, sodium silicate mass concentration, JFC mass concentration, pH value, temperature, time and other parameters on the whiteness and breaking strength of the fabric were discussed. The results show that the waste blended fabric consists of wool, silk and cotton, and the blending ratio of cotton to silk to wool is 75/20/5. The optimum stripping process is hydrogen peroxide mass concentration of 10 g/L, citric acid mass concentration of 2 g/L, pH value of 6, temperature of 80 ℃, time of 80 min, sodium silicate mass concentration of 1.2 g/L, JFC mass concentration of 2 g/L, and bath ratio of 1∶40. Under the conditions of optimal stripping process, the whiteness of waste wool/silk/cotton blended fabric is 54.27%, and the breaking strength is 410.17 cN.

Key words: waste textiles, fabric composition, wool, silk, cotton, blending ratio, stripping process

CLC Number: 

  • TS199

Fig.1

Warp and weft SEM images of waste wool/silk/cotton blended fabrics(×2 000). (a) Warp direction;(b)Weft direction"

Tab.1

Three components determination result of waste wool/silk/cotton blended fabric"

试样序号 毛/丝/棉混纺比
1 0.748/0.210/0.042
2 0.741/0.215/0.044
3 0.745/0.206/0.049
4 0.751/0.207/0.042
5 0.743/0.198/0.059

Fig.2

Influence of H2O2 mass concentration on whiteness and breaking strength of blended fabric"

Fig.3

Influence of citric acid mass concentration on whiteness and breaking strength of blended fabric"

Fig.4

Influence of pH value on whiteness and breaking strength of blended fabric"

Fig.5

Influence of Na2SiO3 mass concentration on whiteness and breaking strength of blended fabric"

Fig.6

Influence of JFC mass concentration on whiteness and breaking strength of blended fabric"

Fig.7

Influence of temperature on whiteness and breaking strength of blended fabric"

Fig.8

Influence of time on whiteness and breaking strength of blended fabric"

Fig.9

Actual picture of waste wool/silk/cotton blended fabric before and after stripping. (a)Before stripping; (b)After stripping"

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