摘要
以苯乙烯(St)、马来酸酐(MA)、香豆素苯乙烯醚化物(CS)为单体,通过自由基溶液聚合合成了双亲性交替共聚物P(St/CS-alt-MA),用凝胶渗透色谱、核磁共振等对聚合物结构进行表征,并对其溶液自组装及组装体的乳化性进行了研究.结果表明双亲性P(St/CS-alt-MA)可以在选择性溶剂中进行自组装形成马来酸酐单元为亲水微区、CS与苯乙烯单元为疏水微区的胶体粒子,用紫外分光光度计,XPS,TEM研究了聚合物胶体粒子性质,结果显示,P(St/CS-alt-MA)在水溶液中可以形成两亲性聚合物胶体粒子,亲水单元在胶粒表面富集,该两亲性聚合物胶体粒子具有良好的乳化性能.
A new amphiphilic alternating copolymer P（St/CS-alt-MA） was prepared through free radical copolymerization. The copolymer structure was examined by GPC and IH NMR. The amphiphilic copoly- mer could aggregate into nanoparticles in selective solution. The micellization and the critical water content （CWC） of P（St/CS-alt-MA） in deionized water were monitored by UV-Vis spectroscopy. The diameters and morphologies of the particles were examined by TEM and XPS. The results show that hydrophilic units are enriched on the surface of the colloid particle and such amphiphilic colloid particles are of efficient emulsification properties.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2009年第5期447-452,共6页
Acta Chimica Sinica
基金
国家自然科学基金(Nos.50673038
20704017)
复旦大学聚合物分子工程教育部重点实验室开放基金
江苏省高等学校优秀科技创新团队计划(No.苏教科[2007]5号)资助项目
关键词
光敏性
双亲性
自组装
胶体粒子
乳化剂
photo-responsive
amphiphilic
self-assembly
particle
emulsifier
