A NOVEL METHOD TO PREPARE CROSSLINKED POLYETHYLENEIMINE HOLLOW NANOSPHERES

作     者：何斌 顾忠伟 

作者机构：Engineering Research Center of Biomaterials Sichuan UniversityNational Engineering Research Center for Biomaterials 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2007年第25卷第5期

页      面：431-435页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Basic Research Program of China(National 973 program No.2005 CB623903) 

主　　题：Hollow nanospheres Polyethyleneimine Template Crosslink. 

摘      要：A novel method to prepare crosslinked polyethyleneimine （CPEI） hollow nanospheres was reported. Uniform silica nanospheres were used as templates, 3-aminopropyl trimethoxysilane （APS） was immobilized on the surface of silica nanospheres as couple agent. Aziridine was initiated ring-opening polymerization with the amino groups in APS to form polyethyleneimine （PEI） shell layer. 1,4-Butanediol diacrylate was utilized to crosslink PEI polymeric shell. The silica nanospheres in core were etched by hydrofluoric acid to obtain hollow CPEI nanospheres. The hollow nanospheres were characterized by X-ray photoelectron spectroscopy （XPS）, transmission electron microscopy （TEM）, and thermogravimetric analysis （TGA）.