INFRARED-SPECTROSCOPY STUDIES OF THE EFFECTS OF THE CATALYST ON THE ESTER CROSS-LINKING OF CELLULOSE BY POLY(CARBOXYLIC ACIDS)

被引：50

作者：

YANG, CQ

机构：

[1] Department of Textiles, Merchandising and Interiors, University of Georgia, Athens, Georgia

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1993年 / 50卷 / 12期

关键词：

D O I：

10.1002/app.1993.070501202

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The esterification of cellulose by a poly(carboxylic acid) proceeds in two steps: the formation of a 5-membered cyclic anhydride intermediate by the dehydration of two carboxyls, and the reaction between cellulose and the anhydride intermediate to form an ester. Sodium hypophosphite is the most effective catalyst for the esterification. The effect of sodium hypophosphite on the esterification of cotton cellulose was studied by Fourier transform infrared spectroscopy (FTIR). It was found that sodium hypophosphite accelerates both the formation of the cyclic anhydride intermediate and the reaction between the anhydride intermediate and cellulose. The chief role of sodium hypophosphite is possibly the acceleration of the esterification of cellulose by the anhydride intermediate. (C) 1993 John Wiley and Sons, Inc.

引用

页码：2047 / 2053

页数：7

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