甲基丙烯酸(3-三甲氧基硅)丙酯-马来酸二丁基锡共聚物/二氧化硅杂化材料的制备

SYNTHESIS OF POLY(3 TRIMETHOXYSILYPROPYL METHACRYLATE co DIBUTYLTIN MALEATE)/SILICA HYBRID MATERIALS BY THE IN SITU SOL GEL PROCESS

甲基丙烯酸（３三甲氧基硅）丙酯马来酸二丁基锡共聚物／二氧化硅杂化材料的制备周文董建华丘坤元（北京大学化学与分子工程学院高分子科学与工程系，１００８７１北京）ＷｅｉＹｅｎ（危岩）（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，Ｄｒｅｘｅｌ...

Poly(3 trimethoxysilylpropyl methacrylate co dibutyltin maleate)/silica (P(MSMA co DBTM)/SiO 2)hybrid material has been successfully prepared from the free radical polymerization of MSMA and DBTM monomers in the presence of tetraethoxysilane (TEOS) by in situ sol gel process. The results from scanning electron microscopy (SEM) revealed that the phase separation was located in the nanometer scale. The covalent bond between the organic and inorganic phases was introduced by the co condensation of silanol groups of TEOS and MSMA, which was resulted from the hydrolysis of ethoxysilyl groups or methoxysilyl groups. The hybrid material exhibits optical transparency almost as good as silica gel. The thermalgravimetric analysis (TGA) showed that the two weight loss steps existed. The presence of the first steps was due to the further condensation of residual silanol groups on the inorganic network during the increase of temperature.