羧基甜菜碱型两性离子聚氨酯水凝胶的制备及水下抗原油黏附性能  

Preparation of Carboxyl-betaine Polyurethane Hydrogel and Study on Its Underwater Anti-crude-oil-adhesion Property

作　　者：王阿强 朱玉长 靳健 WANG Aqiang;ZHU Yuzhang;JIN Jian(College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China;Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China)

机构地区：[1]苏州大学材料与化学化工学部,苏州215123 [2]中国科学院苏州纳米技术与纳米仿生研究所,苏州215123

出　　处：《高等学校化学学报》2021年第4期1246-1252,共7页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51625306,51603229)资助.

摘　　要：通过4-溴丁酸乙酯和N-甲基二乙醇胺之间的亲核取代反应制备得到季铵离子型二元醇.以季铵离子型二元醇与六亚甲基二异氰酸酯(HDI)三聚体为基本原料,通过聚加成反应制备得到聚氨酯预聚体.进一步经碱性水解等过程后制备得到不同水解时间的羧基甜菜碱型两性离子聚氨酯水凝胶(CBPU).结果表明,水解60 min后的羧基甜菜碱型两性离子聚氨酯水凝胶不仅具有较好的机械性能,而且对十六烷、煤油、石油醚、异辛烷甚至原油的水下油接触角(UOCA)均达160°以上,水下油黏附力均为0.该羧基甜菜碱型两性离子聚氨酯水凝胶在防油涂层、油水分离膜以及防污减阻等方面均具有重大的应用前景.Quaternary ammonium ionic diol was synthesized by nucleophilic substitution reaction between ethyl 4-bromobutyrate and N-Methyldiethanolamine.Then,polyurethane prepolymer was prepared via the polymerization of the quaternary ammonium ionic diol and hexamethylene diisocyanate(HDI)trimer.By the process of alkaline hydrolysis,carboxyl-betaine polyurethane hydrogel with different hydrolysis time was finally obtained.The result shows the underwater oil contact angles of hydrolyzing-for-60-min carboxyl-betaine polyurethane hydrogel for cetane,kerosene,petroleum ether,isooctane and even crude oil are all above 160°and the corresponding underwater oil-adhesion forces are all 0.Carboxyl-betaine polyurethane hydrogel with excellent underwater anti-crude-oil-adhesion was successfully prepared.

关 键 词：羧基甜菜碱 聚氨酯 水凝胶 超疏油性能 抗原油黏附 

分 类 号：O631[理学—高分子化学]