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

LI Wei1,2,CHEN Yufang1   

  1. 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

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. 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

Abstract:

In an isopropanoliPA-H2O heterogenous systemboron was used as a promoter and 3-chloro-2-hydroxypropyl trimethyl ammonium chlorideCTAwas used as an etherifying agent to achieve the cationic reaction of celluloseCel.. By orthogonal experimentsthe factors for degree of substitutionDSwere optimizedand product structure was identified by 1H NMR. It showed that DS of the product gets 0.54at mass ratio of mCel.miPAmiPAm30%NaOHm50%CTAmBC=10010004002966962025 60 min for activationand 50 for 4 h reaction.

摘要:

在含有硼化合物(BC)的异丙醇(iPA-H2O非均相体系中,以3--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(iPA)m(iPA)m(30% NaOH)m(50% CTA)m(BC)= 100100040029669620的配比,室温25 活化处理60 min50 恒温反应4 h,产物取代度DS达到0.54

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