|
|||||
|
|
Preparation of poly (methyl methacrylate)/nanometer calcium carbonate composite by in-situ emulsion polymerization |
|
| Authors: | |
| Institution: | (1) Institute of Polymer Reaction Engineering, Zhejiang University, 310027 Hangzhou, China |
| Abstract: | Methyl methacrylate (MMA) emulsion polymerization in the presence of nanometer calcium carbonate (nano-CaCO3) surface modified with (-methacryloxypropyltrimethoxysilane (MPTMS) was carried out to prepare poly (methyl methacrylate) (PMMA)/nano-CaCO3 composite. The reaction between nano-CaCO3 and MPTMS, and the grafting of PMMA onto nano-CaCO3 were confirmed by infrared spectrum. The grafting ratio and grafting efficiency of PMMA on nano-CaCO3 modified with MPTMS were much higher than that on nano-CaCO3 modified with stearic acid. The grafting ratio of PMMA increased as the weight ratio between MMA and nano-CaCO3 increased, while the grafting efficiency of PMMA decreased. Transmission electron micrograph showed that nano-CaCO3 covered with PMMA was formed by in-situ emulsion polymerization. |
| Keywords: | Methyl methacrylate Nanometer calcium carbonate Emulsion polymerization (-methacryloxypropyltrimeth- oxysilane Grafting |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ | |