文献类型：期刊文献

中文题名：天冬氨酸在液相介质中的聚合

英文题名：Research on the pyrocondensation of aspartic acid in liquid medium

作者：卫民[1,2,3,4,5] 赵剑[1,2,3,4] 肖凤龙[1,2,3,4] 张宁[1,2,3,4] 杨静[1,2,3,4]

第一作者：卫民

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术所

年份：2015

卷号：34

期号：A01

起止页码：162-166

中文期刊名：化工进展

外文期刊名：Chemical Industry and Engineering Progress

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

基金：国家科技计划项目(2012BAD32B08)

语种：中文

中文关键词：己二酸共聚物;天冬氨酸;液相热缩聚;聚琥珀酰亚胺

外文关键词：adipic acid copolymer; aspartic acid; liquid phase pyrocondensation polymerization; poly-succinimide;

分类号：TQ922.9

摘要：研究合成了己二酸共聚物溶液,并以此作为天冬氨酸聚合的液相介质,研究了天冬氨酸在此液相介质中的热缩聚反应。当共聚物溶液羟值在310mgKOH/g以下、酸值在5mgKOH/g以下时,聚琥珀酰亚胺（PSI）得率为90.5%~93.4%,大于相同反应条件下天冬氨酸固相热缩聚86.8%的得率。探索了反应温度、反应时间和催化剂用量对天冬氨酸热缩聚和的影响,当反应温度为200℃,反应时间为2h,催化剂用量为8%时,液相介质中热缩聚产物PSI产率为93.4%,数均相对分子质量为39956,相对分子质量分布系数为1.16。本研究还对不同热缩聚条件所得的PSI产物进行了红外光谱对比分析。
Adipic acid copolymer solution was synthesized,using this as liquid medium,the liquid phase pyrocondensation polymerization of aspartic acid was investigated.When the hydroxyl value of the copolymer solution less than 310mgKOH/g and acid value less than 5mgKOH/g,PSI yield was 90.5%—93.4%,more than the yield of 86.8%in the same reaction condition of solid phase pyrocondensation polymerization.The effects of reaction temperature,reaction time and dosage of catalyst on pyrocondensation polymerization of L-ASP have been discussed.When the reaction temperature was 200℃,reaction time was 2hours,dosage of catalyst was 8%,the yield of PSI was 93.4%,and the optimum reaction conditions were obtained.The number-average molecular weight of PSI was 39956,and molecular weight distribution coefficient was 1.16.This study also analyzed the comparison of infrared spectrum of PSI products from different pyrocondensation polymerization conditions.