水溶液中におけるメチルトリエトキシシランの加水分解物の重合

概要

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The structure and distribution of chemical species of hydrolysis and polycondensation products of methyltriethoxysilane in aqueous solutions containing sodium ions have been studied with the trimethylsilylation technique and by <29>^Si n. m. r. spectroscopy. 11 trimethylsilylated derivatives of the products were obtained from the solutions. The recovery of methyltrisilanol (CH_3Si(OH)_3) was much higher than that of the monosilicic acid in an aqueous sodium silicate solution; at the same Si concentration and the same sodium ion-to-silicon molar ratio, suggesting that the polymerization of silicate anions is easier than that of hydrolysis products of methyltriethoxysilane in aqueous solutions. On the basis of the distribution, assignment of <29>^Si n. m. r. peaks corresponding to low-molecular weight species formed from methyltriethoxysilane has been discussed.
社団法人日本セラミックス協会の論文
1990-07-01