Size-Controlled Synthesis of Monodispersed Poly(3-mercaptopropylsilsesquioxane) Microspheres by a Two-Step Sol-Gel Method

被引：15
|
作者：
Lu, Xin [1 ]
Hou, Yuhui [1 ]
Zha, Jie [1 ]
Xin, Zhong [1 ]
机构：
[1] E China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 38期
基金：
中国国家自然科学基金;
关键词：
ONE-POT SYNTHESIS; ORGANOSILICA NANOPARTICLES; BIOLOGICAL APPLICATIONS; SILICA NANOPARTICLES; PARTICLES; SPHERES; ROUTE; FUNCTIONALIZATION; CHEMISTRY;
D O I：
10.1021/ie502146k
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A two-step acid-base catalyzed sol-gel method has been used to prepare monodispersed poly(3-mercaptopropylsilsesquioxane) (PMPSQ) microspheres. Initially, the hydrolysis of 3-mercaptopropyltrimethoxysilane was catalyzed by hydrochloric acid in an aqueous medium, and then the addition of ammonium hydroxide initiated the condensation of hydrolysate. The formation process of PMPSQ microspheres was characterized by field emission scanning electron microscopy and Si-29 NMR. The formation mechanism of the monodispersed microspheres was also discussed. Through this method, monodispersed PMPSQ microspheres with a high yield were achieved and the particle size could be adjusted by changing the precursor concentration.
引用
收藏
页码：14659 / 14663
页数：5
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