文献类型：期刊文献

英文题名：A study on waterglass aging by determination of oligomers using feasible trimethylsilyl-gas-chromatography method

作者：Pan Ming-Chu[1];Deng Wen-Jing[2];Yang Yu-Xiang[1,2];Chen Ya-Ru[2]

机构：[1]Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2010

卷号：36

期号：1

起止页码：110

外文期刊名：GLASS PHYSICS AND CHEMISTRY

收录：;EI(收录号：20101912925634);WOS:【SCI-EXPANDED(收录号:WOS:000275461000018)】；

基金：We thank the National Natural Science Foundation of China (no. 20577010) as well as the Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University very much for financial support.

语种：英文

外文关键词：silylation process; strong polar solvent; waterglass; aging

摘要：In this paper, the trimethyisilyl method was used to study the aging process of waterglass, in which HCl was successfully used as acidic catalystes and a strong polar acetone was used as organic solvent. The results show, all the oligomeric silicate species can be completely converted into trimethylsilyl (TMS) derivatives, when waterglass was stored, the content of mono-silicate gradually increases, and the content of silicate oligomers decreases, but total amount of high polysilicates increases instead, leading to the phenomenon of "bipolar differentiation" occurring. However when waterglass is modified, content of oligomeric silicate species increases, but content of polymeric silicate species decreases, and when waterglass is reflux-condensed, the composition tends to return back to its original orientation.