文献类型：期刊文献

中文题名：聚乙烯醇与戊二醛的交联反应动力学

英文题名：Cross-Linking Reaction Kinetics of Polyvinyl Alcohol with Glutaraldehyde

作者：蒋文斌[1];纪利俊[1];陈葵[1];武斌[1];吴艳阳[1];朱家文[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2016

卷号：42

期号：5

起止页码：625

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：缩醛反应;戊二醛;聚乙烯醇;反应动力学

外文关键词：acetalization; glutaraldehyde; polyvinyl alcohol; reaction kinetics

摘要：聚乙烯醇与戊二醛的交联反应常用于微胶囊包覆和高分子材料的改性工艺中。采用分光光度法测定了反应体系中聚乙烯醇的浓度,研究了聚乙烯醇与戊二醛的交联反应特性,确定了聚乙烯醇与戊二醛的反应计量比。结果表明,交联反应可视为不可逆反应,聚乙烯醇与戊二醛的物质的量之比约为1:525。建立了反应动力学方程,确定了交联反应对聚乙烯醇为零级反应,对戊二醛为0.7级反应,拟合得到了反应动力学参数。
Cross-linking reaction between polyvinyl alcohol and glutaraldehyde has been widely applied to microencapsulation and polymer modification. In this study, the cross-linking between polyvinyl alcohol and glutaraldehyde was characterized. The polyvinyl alcohol concentration is measured in the reaction spectrophotometrically. The stoichiometric ratio is determined between polyvinyl alcohol and glutaral-dehyde. The experimental results have demonstrated that the cross-linking reaction is irreversible and the stoichiometry of polyvinyl alcohol and glutaraldehyde is about 1 ： 525. The kinetic equation has also been established for cross-linking reaction, with the polyvinyl alcohol and glutaraldehyde exhibiting a kinetic order of zero and 0. 7 respectively,and the parameters have been evaluated by fitting.