溶胶—凝胶法制备有机/无机复合膜的研究  

Preparation of organic/inorganic composite film through Sol-Gel

作　　者：宋建华[1] 苏育志[1] 

机构地区：[1]广州大学生物与化学工程学院,广东广州510405

出　　处：《广州大学学报（自然科学版）》2004年第1期17-19,23,共4页Journal of Guangzhou University:Natural Science Edition

基　　金：广州大学校级项目[sjh]101资助.

摘　　要：直接从无定型二氧化硅出发,研究了与乙二醇、氢氧化钾反应,生成高反应活性的五配位硅钾化合物,再与2 氯乙醇反应制备双羟基四配位硅化合物,然后通过溶胶—凝胶法制备了双羟基四配位硅/聚乙烯醇复合膜,并分析了膜的热性能,发现改性PVA复合膜的热性能有所降低;但膜的透明性和韧性基本没变;说明四配位硅水解后得到的硅醇基与PVA中的羟基发生了缩合作用.A high reactive penta-coordinated organic silicon complex had been prepared(KSi(OCH_2CH_2O)2(OCH_2CH_2OH)), by means of the reaction of silica with ethylene glycol and potassium hydroxide, and then di-hydroxy tetracoordinated silicon (OCH_2CH_2O)Si(OCH_2CH_2OH)(OCH_2CH_2OCH_2CH_2OH) was prepared by the reaction of ClCH_2CH_2OH with reactive penta-coordinated silicon complex. Lastly, poly (vinyl alcohol)(PVA) membrane was modified by tetracoordinated silicon through Sol-Gel, and its thermal property and the glass transformation temperature of membrane decreased compared with PVA. But the remnants (SiO_2) of membrane increased.

关 键 词：配位有机硅 溶胶—凝胶法 有机—无机复合膜 

分 类 号：O634.51[理学—高分子化学]