氢键型N-马来酰-L-丙氨酸/PVA旋光性聚合物的合成  

Synthesis of hydrogen-bonded N-maleoyl-L-alanine/PVA optically active polymer

作　　者：翟宁[1] 牛小玲[2] 

机构地区：[1]西安工业大学图书馆,陕西省西安市710021 [2]西安工业大学材料与化工学院,陕西省西安市710021

出　　处：《合成树脂及塑料》2016年第5期26-28,共3页China Synthetic Resin and Plastics

基　　金：陕西省薄膜技术与光学检测重点实验室开放基金(ZSKJ201302)

摘　　要：以马来酸酐与手性丙氨酸（L-丙氨酸）为原料,通过两步法合成了N-马来酰-L-丙氨酸,再通过氢键作用将其与聚乙烯醇（PVA）复合制备了氢键型N-马来酰-L-丙氨酸/PVA旋光性聚合物.采用傅里叶变换红外光谱仪,熔点仪和旋光仪对中间产物和最终产物的结构及性能进行了表征和测试,讨论了反应过程中的影响因素.结果表明：合成N-马来酰-L-丙氨酸较佳的工艺条件为：第一步的氨解反应温度25～35℃,反应介质采用冰乙酸;第二步是自缩聚合,以三乙胺为催化剂,得到最终产物的产率为93%.The N-maleoyl-L-alanine is prepared by two step process with maleic anhydride and chiral alanine, then it is grafted to polyvinyl alcohol（PVA） by hydrogen bonding to produce hydrogen-bonded N-maleoyl-L-alanine/PVA optically active polymer. The properties and structures of the intermediate and final product are characterized by use of Fourier transform infrared spectrometer, polarimeter and melting point instrument. The factors that contribute to the synthesis process are discussed as well. The results show that the optimal process conditions cover that： the reaction temperature of ammonolysis, the first step of the reaction, is from 25 ℃ to 35 ℃ with glacial acetic acid as reaction medium; the second step of the reaction is self-condensation with triethylamine as catalyst, and the yield of the final product is 93%.

关 键 词：旋光性聚合物 马来酸酐 手性丙氨酸 N-马来酰-L-丙氨酸 聚乙烯醇 

分 类 号：O631.5[理学—高分子化学]