Authors: M Oubaha M Dubois B Murphy P Etienne
Publish Date: 2006/05/01
Volume: 38, Issue: 2, Pages: 111-119
Abstract
A hybrid organicinorganic material was prepared from the hydrolytic cocondensation of 3trimethoxysilylpropylmethacrylate MAPTMS and diphenyldiethoxysilane DPHDES The synthesis was performed in three steps 1 MAPTMS prehydrolysis 2 addition of DPHDES and 3 further hydrolysis of the obtained mixture 29Si nuclear magnetic resonance spectroscopy was used to characterise the structural evolution of the mineral network during the synthesis It revealed the catalytic effect of DPHDES on the condensation reaction of silanol groups initially observed for prehydrolysed MAPTMS In addition it was clearly demonstrated that the formation of the highest condensed species of the aromatic oligomers D2 species occurred only in the presence of aliphatic oligomers which decrease the sterical hindrance about the silicon nuclei
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