| A NOVEL METHOD TO PREPARE CROSSLINKED POLYETHYLENEIMINE HOLLOW NANOSPHERES |
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| 作者姓名： | Wei Wang Jun-xiao Yang Bin He Zhong-wei Gu |
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| 作者单位： | Engineering Research Center of Biomaterials Sichuan University National Engineering Research Center for Biomaterials，Engineering Research Center of Biomaterials Sichuan University，National Engineering Research Center for Biomaterials，Chengdu 610064，China，Chengdu 610064，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 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).
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| 关 键 词： | 纳米材料 纳米球 制备 模板法 交联聚乙烯亚胺 |
| 收稿时间： | 2007-03-09 |
| 修稿时间： | 2007-03-09 |
A NOVEL METHOD TO PREPARE CROSSLINKED POLYETHYLENEIMINE HOLLOW NANOSPHERES |
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| Wei Wang Jun-xiao Yang Bin He Zhong-wei Gu.A NOVEL METHOD TO PREPARE CROSSLINKED POLYETHYLENEIMINE HOLLOW NANOSPHERES[J].Chinese Journal of Polymer Science,2007,0(5):431-435. |
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| Authors: | Wei Wang Jun-xiao Yang Bin He Zhong-wei Gu
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| Institution: | Engineering Research Center of Biomaterials, Sichuan University, National Engineering Research Center for Biomaterials, Chengdu 610064, China |
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| Abstract: | 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). |
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| Keywords: | Hollow nanospheres Polyethyleneimine Template Crosslink |
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