化学工程2011，Vol.39Issue(4)：29-33,5.
聚合物/SiO2核壳结构单分散微球的制备
Preparation of monodispersed microspheres with polymer core and SiO2 shell structure
摘要
Abstract
Polymer (PGMA, PGMA/PS)/SiO2 core-shell monodispersed microspheres are more stable than polymer microspheres when they are used at high temperature or in organic solvent. To prepare the composite microspheres,monodispersed polymer (PGMA, PGMA/PS) microspheres were modified with amino-group at the first step, and then the microspheres were coated with SiO2 shell by catalyzing the hydrolysis of tetra ethoxy silane (TEOS) and adsorbing the hydrolyzate. The obtained microspheres were characterized by scanning electron microscope (SEM),Fourier transform infrared spectrometer (FTIR), laser particle analyzer, and mass loss of ablation. Polymer (PGAM, PGMA/PS )/SiO2 core-shell monodispersed microspheres with diameter of 2 μm and 5 μm were successfully obtained. The shell thickness is in the range of several nanometers to tens of nanometers. The thicknesses of the shell are heavily influenced by the kinds of ammoniation reagents. The electrostatic self-assembly mechanism of ammoniated microspheres was evidenced by Zata potential.关键词
聚甲基丙烯酸缩水甘油酯/SiO2/核壳结构/单分散微球/氨基Key words
PGMA/ SiO2/ core-shell structure/ monodispersed microspheres/ amino group分类
通用工业技术引用本文复制引用
吉志强,张秋禹,邢瑞英,马明亮,耿旺昌..聚合物/SiO2核壳结构单分散微球的制备[J].化学工程,2011,39(4):29-33,5.基金项目
国防科技基础科研项目 （）
