纺织学报 ›› 2020, Vol. 41 ›› Issue (07): 93-101.doi: 10.13475/j.fzxb.20190501408

• 染整与化学品 • 上一篇    下一篇

亚麻粗纱的超临界CO2煮漂工艺

张娟1,2, 郑环达2, 乔燕1, 高世会1,2, 郑来久2()   

  1. 1.辽宁轻工职业学院, 辽宁 大连 116100
    2.大连工业大学 辽宁省超临界CO2无水染色重点实验室, 辽宁 大连 116034
  • 收稿日期:2019-05-08 修回日期:2020-02-26 出版日期:2020-07-15 发布日期:2020-07-24
  • 通讯作者: 郑来久
  • 作者简介:张娟(1985—),女,讲师,博士。主要研究方向为超临界二氧化碳煮漂技术。
  • 基金资助:
    国家自然科学基金青年基金项目(21908015);辽宁省协同创新群体专项项目(2016J003);辽宁省博士科研启动基金项目(2020-BS-295)

Scouring and bleaching process for flax roves using supercritical CO2

ZHANG Juan1,2, ZHENG Huanda2, QIAO Yan1, GAO Shihui1,2, ZHENG Laijiu2()   

  1. 1. Liaoning Vocational College of Light Industry, Dalian, Liaoning 116100, China
    2. Liaoning Provincial Key Laboratory of Supercritical CO2 Waterless Dyeing, Dalian Polytechnic University, Dalian, Liaoning 116034, China
  • Received:2019-05-08 Revised:2020-02-26 Online:2020-07-15 Published:2020-07-24
  • Contact: ZHENG Laijiu

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摘要：

针对亚麻粗纱传统煮漂工序的高耗水和环境污染问题,利用超临界CO2代替水介质对亚麻粗纱进行煮漂。系统研究了复配生物酶(木聚糖酶和纤维素酶)质量分数、温度、压力和时间对亚麻粗纱白度的影响,并利用响应面分析法对粗纱煮漂工艺条件进行优化,通过Box-Behnken中心组合实验和响应面法研究了自变量及其交互作用对白度的影响,得到粗纱白度的二次多项式回归方程的预测模型。确定了亚麻粗纱超临界CO2煮漂最佳工艺条件:复配生物酶质量分数为3%,温度为50 ℃,压力为13 MPa,时间为60 min。在最优工艺条件下,超临界CO2煮漂亚麻粗纱与原样相比,白度达到40.8%、残胶率为16.68%、断裂强度为17.12 cN/tex、断裂伸长率为4.23%、分裂度为1 072 Nm。与传统煮漂效果相比,超临界CO2煮漂工艺仍存在一定差距,需进一步提高。

关键词: 亚麻粗纱, 煮练, 漂白, 前处理, 超临界CO2, 响应面优化, 白度

Abstract:

In order to solve the problem of high water consumption and environmental pollution in conventional scouring and bleaching process of flax roves, scouring and bleaching technology for flax roves using supercritical CO2 as the medium instead of water was proposed. The effects of mass fraction of compound biological enzymes (xylanase and cellulase), temperature, pressure and time on the whiteness of flax roves were systematically studied using supercritical CO2, and the process conditions of scouring and bleaching were optimized by responsive surface analysis. The influence of the independent variables and their interaction on the whiteness was investigated using Box-Benhnken center composite design and responsive surface method, and the prediction model in a form of quadratic polynomial regression equation was obtained. An optimized process for scouring and bleaching of flax roves was recommended with a mass fraction of compound biological enzymes of 3%, a temperature of 50 ℃, a pressure of 13 MPa as well as a treatment time of 60 min in supercritical CO2. Moreover, under the optimum technical conditions, the properties of scoured and bleached roves under the supercritical CO2 condition were compared with that of original sample. The whiteness, the residual gum content, the breaking strength, the elongation at break and the split degree of the flax roves are 40.8%, 16.68%, 17.12 cN/tex, 4.23% and 1 072 Nm, respectively. However, there is still a certain gap in comparison with the traditional method, which needs to be further improved.

Key words: flax roves, scouring, bleaching, pre-treatment, supercritical CO2, responsive surface optimization, whiteness

中图分类号: 

  • TS192.552

表1

响应面因素水平编码表"

水平 因素
生物酶
质量分数x1/%		 温度x2/
℃		 压力x3/
MPa		 时间x4/
min
-1 1 40 10 30
0 2 50 15 60
1 3 60 20 90

图1

加水量对复配生物酶活性和粗纱白度的影响"

表2

响应面实验分析设计及结果"

序号 x1 x2 x3 x4 Y/%
1 -1 0 -1 0 37.1
2 0 0 1 1 39.5
3 0 0 0 0 41.5
4 0 0 1 -1 38.3
5 0 1 1 0 37.7
6 0 1 0 1 37.1
7 0 0 0 0 39.7
8 0 -1 1 0 36.4
9 -1 0 0 1 38.6
10 -1 1 0 0 35.9
11 0 1 0 -1 36.3
12 -1 0 0 -1 35.5
13 0 0 -1 -1 36.7
14 0 -1 0 -1 33.6
15 1 -1 0 0 35.8
16 0 0 -1 1 37.5
17 1 0 -1 0 39.4
18 -1 -1 0 0 30.1
19 0 -1 0 1 33.4
20 -1 0 1 0 36.9
21 1 1 0 0 37.2
22 0 0 0 0 39.8
23 0 0 0 0 39.5
24 1 0 0 1 40.8
25 0 0 0 0 41.4
26 0 -1 -1 0 29.6
27 1 0 0 -1 40.8
28 0 1 -1 0 37.6
29 1 0 1 0 41.2

表3

二次回归模型的方差分析结果"

方差
来源		 平方和 自由度 均方 F值 P值 显著性
模型 241.00 14 17.21 20.44 < 0.000 1 ***
x1 37.10 1 37.10 44.05 < 0.000 1 ***
x2 43.70 1 43.70 51.89 < 0.000 1 ***
x3 12.20 1 12.20 14.49 0.001 9 **
x4 2.71 1 2.71 3.21 0.094 6
x12 4.35 1 4.35 5.17 0.039 3 **
x22 125.25 1 125.25 148.71 < 0.000 1 ***
x32 6.41 1 6.41 7.61 0.015 4 *
x42 6.09 1 6.09 7.23 0.017 6 *
x1x2 4.84 1 4.84 5.75 0.031 0 *
x1x3 1.00 1 1.00 1.19 0.294 3
x1x4 2.40 1 2.40 2.85 0.113 4
x2x3 11.22 1 11.22 13.32 0.002 6 **
x2x4 0.25 1 0.25 0.30 0.594 5
x3x4 0.04 1 0.04 0.047 0.830 6
剩余 11.79 14 0.84
失拟 7.92 10 0.79 0.82 0.638 3
误差 3.87 4 0.97
总和 252.79 28
R2 0.953 4
调整R2 0.906 7

图2

Y=f(x1, x2)的响应面图"

图3

Y=f(x2, x3)的响应面图"

图4

Y=f(x2, x4)的响应面图"

图5

复配生物酶质量分数对白度的影响"

表4

不同煮漂方法下亚麻粗纱的性能"

煮漂
方法		 白度/
%		 残胶率/
%		 断裂强度/
(cN·tex-1)		 断裂
伸长率/%		 分裂度/
Nm
超临界CO2+
复配生物酶		 40.8 16.68 17.12 4.23 1 072
传统方法 68.6 15.92 16.93 3.95 1 249
原样 15.5 21.76 16.28 2.04 575
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