溶胶-凝胶原位聚合法制备PMAA-SiO_2复合材料  

Preparation of PMAA-SiO_2 composite material by sol-gel in-situ polymerization

作　　者：孙倩[1] 杨明[1] 张观流[1] 

机构地区：[1]武汉工业学院化学与环境工程学院,武汉430023

出　　处：《化工新型材料》2013年第7期57-59,共3页New Chemical Materials

基　　金：湖北省自然科学基金(2005ABA025);武汉工业学院研究生教育创新基金(2010cx018)

摘　　要：以3-(三甲氧基甲硅烷基)丙基-2-甲基-2-丙烯酸酯为偶联剂对SiO2进行表面改性,得到改性的SiO2颗粒(MPS-SiO2),用原位聚合法以甲基丙烯酸在MPS-SiO2上杂化聚合制备了聚甲基丙烯酸-二氧化硅(PMMA-SiO2)复合材料。采用SEM观察了复合材料的形貌;采用IR和TGA对PMMA-SiO2的结构和性能进行了表征。结果表明,MPS-SiO2颗粒能够成功地被甲基丙烯酸杂化聚合形成PMMA-SiO2复合材料;最优的反应条件是MPS-SiO2为0.4g,甲苯为30mL,甲基丙烯酸为1mL,过氧化苯甲酰为0.01g;最优的干燥条件是PMMA-SiO2先经溶剂抽提,再在真空30℃下干燥。SiO2 was chemically modified with silane coupling agent 3-methacrylic propyltrimethoxysilane, and modi- fied particles MPS-SiO2 were obtained. The poly methylacrylic acid-silica（PMAA-SiO2 ）composite material was prepared by i^situ polymerization,with methylacrylic acid heterozygous polymerized on the surface of MPS-SiO2. The morphology of the material was observed by SEM. The structure and properties of PMMA-SiO2 were characterized by IR and TGA. The results showed that MPS-SiO2 particles can be successfully heterozygous polymerized by methylacrylic acid to form PMAA-SiO2 composite material. The optimal composition of reactive raw materials were 0. 4g MPS-SiOz, 30mL toluene, lmL methylaerylic acid, 0. 01g benzoyl peroxide. The best drying condition was that PMMA-SiO2 should be solvent extrac- ted before drying at vacuum 30℃.

关 键 词：甲基丙烯酸 二氧化硅 复合材料 

分 类 号：TB33[一般工业技术—材料科学与工程]