The features of nitric acid 'mercerization' of cellulose

被引：20

作者：

Gert, EV ^{[1
]}

Morales, AS ^{[1
]}

Zubets, OV ^{[1
]}

Kaputskii, FN ^{[1
]}

机构：

[1] Belarusian State Univ, Res Inst Physicochem Problems, Minsk 220080, BELARUS

来源：

CELLULOSE | 2000年 / 7卷 / 01期

关键词：

cotton cellulose; wood cellulose; microcrystalline cellulose; nitric acid; Knecht compound; mercerization; decrystallization; temperature effects;

D O I：

10.1023/A:1009206113613

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：

Transformation of native cellulose species into cellulose-II polymorph through the additive Knecht compound formed under the action of 68.5% nitric acid has been studied. Probable causes of peculiar temperature effects in the course of phase transformations taking place in cellulose of various origin, crystallite dispersity, or morphologic structure are discussed. The processes of hydrolytic destruction and esterification of starting materials during their 'mercerization' by this non-traditional agent at 20 degrees C and 0 degrees C are quantitatively characterized. In the case of mercerization of wood microcrystalline cellulose at 20 degrees C a decrystallizing effect due to side reactions of partial nitration is noted.

引用

页码：57 / 66

页数：10

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