Summary
The functionality of divinyl-terminated poly(dimethylsiloxane) (PDMS) was greatly increased by a substitution reaction to give PDMS with triethoxysilyl chain ends. Samples having number-average molecular weights of 720 and 17.6 × 103 g mol−1, and mixtures thereof, were added to tetraethoxysilane (TEOS) or a related silane. The functionalized PDMS-silane mixtures were hydrolyzed in the usual sol-gel technique to give polymer-modified silica glasses. The hardness of the glasses was measured, and then related to the molecular weight of the PDMS, its molecular weight distribution, the composition of the PDMS-silane mixtures, and the nature of the silane.
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Mark, J.E., Sun, C.C. Polymer-modified silica glasses. Polymer Bulletin 18, 259–264 (1987). https://doi.org/10.1007/BF00255119
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DOI: https://doi.org/10.1007/BF00255119