Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1485701 | Journal of Non-Crystalline Solids | 2007 | 6 Pages |
Abstract
The effects of dimethyldiethoxysilane (DDS) addition on the sol–gel process of tetraethylorthosilicate (TEOS) were investigated by varying the addition-time of DDS to acid-catalyzed TEOS solutions in different water contents. At a low water content, the solution is transparent until gelation takes place, while at a high water content, phase separation occurs and leads to hydrophobic particles which, according to scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDX) and thermogravimetric (TG) analysis, show different morphology and thermal behavior. The reaction between TEOS and DDS in different water contents and the structure of final polymers are discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Fang Wang, Jianhong Liu, Zhongkuan Luo, Qianling Zhang, Peixin Wang, Xun Liang, Cuihua Li, Jingzhong Chen,