端羟基超支化聚合物的合成与改性.doc

文档介绍：端羟基超支化聚合物的合成与改性
强涛涛张国国王学川基金项目:国家自然科学基金项目(21076120);陕西省科技计划项目(2011JQ2012);陕西科技大学博士启动基金项目(BJ10-19);陕西科技大学研究生创新基金
作者简介:强涛涛(1980-),硕导,博士;通讯联系人:王学川,教授,电话:[phone],E-mail :******@sust.
教育部轻化工助剂化学与技术重点实验室陕西科技大学西安 710021
摘要:以丁二酸酐和二乙醇胺为起始原料加成反应合成AB2单体,将其与中心核分子三羟甲基丙烷反应,在对甲苯磺酸催化下,甲苯为带水剂,通过酯化反应得到三代端羟基超支化聚(胺-酯),再以棕榈酰氯对其进行改性得到超支化聚(胺-酯)表面活性剂。通过单因素实验筛选出合成端羟基超支化聚合物最佳反应条件:反应温度120℃,反应时间8h,催化剂用量为3%(以AB2单体质量计)。利用FTIR、1H-NMR等方法对改性前后超支化聚(胺-酯)的分子结构进行了表征。通过表面张力仪对产物的表面活性进行了研究,结果表明合成的产物具有典型表面活性剂的性质。
关键词:超支化聚(胺-酯);合成;改性;表面活性
中图分类号:O633 文献标识码:A
Synthesis and Modification of Hydroxyl-terminated Hyperbranched Polymer
QIANG Tao-tao, ZHANG Guo-guo, WANG Xue-chuan*
(Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021)
Abstract:A series three generation of hydroxyl-terminated hyperbranched poly(amine-ester) (HPAE-OH) were synthesized by the polyesterification of 4-(bis(2-hydroxyethyl)amino)-4-oxobutanoic acid [prepared by inic anhydride with diethanolamine (DEA)] as an AB2-type monomer with trimethylol propane (TMP) as the core moiety, proceeding in one-step procedure in the melt with p-toluenesulfonic acid (p-TSA) as catalyst, toluene as water-carrying agent. Then, it was modified by palmitoyl chloride to obtain hyperbranched polymer surfactant. The appropriate reaction conditions of hyp