Article ID Journal Published Year Pages File Type
1485701 Journal of Non-Crystalline Solids 2007 6 Pages PDF
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.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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