Alkaline hydrogen peroxide bleaching of cellulose

被引：98

作者：

Brooks, RE ^{[1
]}

Moore, SB ^{[1
]}

机构：

[1] Burlington Chem Co Inc, Burlington, NC 27215 USA

来源：

CELLULOSE | 2000年 / 7卷 / 03期

关键词：

bleaching; cellulose; hydrogen peroxide;

D O I：

10.1023/A:1009273701191

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A closed system bleaching apparatus was designed to determine the kinetics and effects of various factors on alkaline hydrogen peroxide bleaching of textile cellulose fabrics. It was confirmed that perhydroxyl anion is the primary bleaching moiety in alkaline hydrogen peroxide systems. The use of the apparatus in the measurement of fabric color, waste oxygen, and the subsequent calculation of hydroxyl ion, and molecular hydrogen peroxide confirmed that pH and titration of 'free' hydrogen peroxide in alkaline bleaching systems are not good indicators of bleaching mechanism. The role of the cellulose itself in the chemical bleaching system was determined. The rate of bleaching on cotton fabric was shown to be a first order reaction in concentration of perhydroxyl anion at 60 and 90 degreesC. An activation energy of 17 kcal/mole was estimated. Decomposition of H2O2 into waste oxygen was found to be second order kinetics.

引用

页码：263 / 286

页数：24

共 16 条

[1]

Dannacher J, 1996, TEXT CHEM COLOR, V28, P24

[2] HOMOGENEOUS BASE-CATALYZED DECOMPOSITION OF HYDROGEN PEROXIDE [J].