阳离子聚乙烯醇的合成及表征

摘要

本文用三甲胺、环氧氯丙烷水法合成醚化剂缩水甘油基三甲基氯化铵(GTMAC)中间体,再用GTMAC与高分子聚合物聚乙烯醇(PYA)反应制得阳离子聚乙烯醇.研究了GTMAC和PVA的用量比、反应液的pH值、反应温度、反应时间对阳离子聚乙烯醇的合成影响,所得产物阳离子聚乙烯醇的产率高达96.58％,阳离子取代度值w=97.01％.对产物阳离子聚乙烯醇的结构进行了红外表征.%In this paper, the etherifying agent glycidyl trimethyl ammonium chloride (GTMAC) by trimethylamine and epichlorohydrin under water were synthesised, then cationic polyvinyl alcohol by reaction of polyvinyl alcohol (PVA) and GTMAC was prepared. The affecting factors in the synthesis of PVA such as the molar ratio between GTMAC and PVA, the pH of reaction solution, reaction temperature, reaction time were studied. The yield of cationic PVA was 96.58%, and the cationic substitution degree was w=97.01%. At the same time, the structure of cationic polyvinyl alcohol was characterized by IR.