化妆品级聚天冬氨酸钠的制备  

Preparation of Cosmetic-Grade Sodium Polyaspartate

作　　者：董怡麟 张浩[1] 陈金龙 DONG Yilin;ZHANG Hao;CHEN Jinlong(College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China;Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)

机构地区：[1]吉林农业大学食品科学与工程学院,长春130118 [2]中国科学院长春应用化学研究所,中国科学院生态环境高分子材料重点实验室,长春130022

出　　处：《应用化学》2020年第8期883-888,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金项目(21805272,31801477)资助。

摘　　要：以L-天冬氨酸为起始原料通过缩合聚合合成了化妆品级的聚天冬氨酸钠(PASP)。详细考察了聚合温度、聚合时间及催化剂用量对聚合反应的影响,筛选出最优的聚合条件。利用核磁共振波谱仪(NMR)及凝胶渗透色谱(GPC)对PASP的结构及相对分子质量进行表征,同时也对其耐酸碱性、耐温性及兼容性进行了评估。结果表明,所制备的PASP颜色浅、气味小、杂质少、品质高并具有良好的耐酸碱性、耐温性及兼容性,达到了化妆品的使用标准,可作为保湿剂添加到化妆品中。Cosmetic-grade sodium polyaspartate was synthesized through the polycondensation of L-aspartic acid.The effects of polymerization temperature,time and catalyst amount on the polymerization were systematically investigated to obtain the optimal polymerization conditions.The structure and molecular weight of sodium polyaspartate were characterized by nuclear magnetic resonance spectroscopy(NMR)and gel permeation chromatography(GPC).The properties of acid and alkali resistance,temperature resistance and compatibility were also evaluated.The resultant sodium polyaspartate has light color(white),low odor,few impurities and high quality,exhibits excellent acid,alkali,temperature resistance and compatibility,reaches the standard as a moisturizing additive.

关 键 词：L-天冬氨酸 聚天冬氨酸钠 缩合聚合 

分 类 号：O631.5[理学—高分子化学]