含硼非均相体系中纤维素阳离子化反应的优化

化工进展

含硼非均相体系中纤维素阳离子化反应的优化

李伟1，2，陈玉放1

1中国科学院广州化学研究所，中国科学院纤维素化学重点实验室，广东广州 510650；2中国科学院研究生院，北京 100049

出版日期:2011-11-05 发布日期:2011-11-05

Optimization of cationic reaction of cellulose in heterogenous systems with boron compound

LI Wei1，2，CHEN Yufang1

1The Key Laboratory of Cellulose and Lignocelluloses Chemistry，Guangzhou Institute of Chemistry，Chinese Academy of Science，Guangzhou 510650，Guangdong，China；2Graduate University of Chinese Academy of Sciences，Beijing 100049，China

Online:2011-11-05 Published:2011-11-05

摘要/Abstract

摘要：

在含有硼化合物（BC）的异丙醇（iPA）-H₂O非均相体系中，以3-氯-2-羟丙基三甲基氯化铵（CTA）为醚化剂，对棉短绒纤维素（Cel.）进行阳离子化反应。采用正交实验确定了影响阳离子纤维素取代度（DS）的因素，并对反应进行了优化，并采用¹H-NMR对产物的结构进行了确认。结果表明，按m(Cel.)∶m(iPAⅠ)∶m(iPAⅡ)∶m(30% NaOH)∶m(50% CTA)∶m(BC)= 100∶1000∶400∶296∶696∶20的配比，室温25 ℃活化处理60 min，50 ℃恒温反应4 h，产物取代度DS达到0.54。

Abstract:

In an isopropanol（iPA）-H₂O heterogenous system，boron was used as a promoter and 3-chloro-2-hydroxypropyl trimethyl ammonium chloride（CTA）was used as an etherifying agent to achieve the cationic reaction of cellulose（Cel.）. By orthogonal experiments，the factors for degree of substitution（DS）were optimized，and product structure was identified by ¹H NMR. It showed that DS of the product gets 0.54，at mass ratio of m（Cel.）∶m（iPAⅠ）∶m（iPAⅡ）∶m（30%NaOH）∶m（50%CTA）∶m（BC）=100∶1000∶400∶296∶696∶20，25 ℃，60 min for activation，and 50 ℃ for 4 h reaction.

李伟1，2，陈玉放1. 含硼非均相体系中纤维素阳离子化反应的优化[J]. 化工进展.

LI Wei1，2，CHEN Yufang1. Optimization of cationic reaction of cellulose in heterogenous systems with boron compound[J]. Chemical Industry and Engineering Progree.