纺织学报 ›› 2010, Vol. 31 ›› Issue (2): 60-63.

• 染整与化学品 • 上一篇    下一篇

苎麻酶-化学联合脱胶工艺优化

李立恒;谢达平;揭寸成;杨瑞芳;佘玮;周清明

  

  • 收稿日期:2008-12-29 修回日期:2009-07-29 出版日期:2010-02-15 发布日期:2010-02-15

Optimizing enzymatic-chemical degumming of ramie

LI Li-heng;XIE Da-peng;JIE Yu-cheng;YANG Rui-fang;SHE Wei;ZHON Qing-ming

  

  • Received:2008-12-29 Revised:2009-07-29 Online:2010-02-15 Published:2010-02-15

摘要:

为了减轻苎麻化学脱胶造成的环境污染问题,提高苎麻纤维可纺性能,采用酶-化学联合脱胶法进行苎麻脱胶,分析酶脱胶过程中pH值、浴比、酶用量、金属离子、温度和时间对苎麻脱胶的影响,同时对浴比、酶用量、温度和时间进行4因素3水平的正交试验,采用优化后的工艺对苎麻进行酶脱胶,化学精练和漂洗。结果表明,苎麻在用KDN果胶酶第1步脱胶(浴比为1∶12,pH 值为8.6,1 mmol/L Mg2+,KDN果胶酶300 IU/g,45 ℃、4 h), TZ-888复合酶第2步脱胶(浴比为1∶18,pH值为 4.0,1 mmol/L Ca2+,TZ-888复合酶500 IU/g,40 ℃,5 h)后残胶率为14.14%,进行化学精练和漂洗后最终残胶率为1.79%。

Abstract:

In order to reduce environmetal pollution resulted from chemical degumming and improve the spinnability of ramie,the enzymatic-chemical degumming technique of ramie was adopted. The effects of pH,bath ratio,dosage of enzyme,metal ions,temperature and time on degumming of ramie were investigated. The orthogonal test of L9(34) were done by bath ratio,dosage of enzyme,temperature and time. The degumming of ramie with enzyme was done according to optimized technique,followed by chemical refining and rinsing. The results showed that the residual gum of ramie was 14.14% after the first degumming with KDN pectinase(1∶12 of bath ratio,pH= 8.6,1 mmol/L Mg2+,300 IU/g of KDN pectinase,45℃, 4 h),and the second degumming with TZ-888 composite enzyme(1∶18 of bath ratio,pH= 4.0,1 mmol/L Ca2+, 500 IU/g of TZ-888 compound enzyme,40 ℃,5 h),and the final residual gum of ramie was 1.79% after chemical refining and rinsing.

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