Organic-Inorganic Hybrid Nanocomposites Prepared by Means of Sol-Gel Condensation of Bismethacrylatesilanes in Reactive Diluents

摘要

A bismethacrylatesilane monomer (BMS) was prepared vai selective Michael addition of aminopropyltrimethoxysilane (APTMS) to the acrylate groups of 2-methacryloyloxyethyl acrylate (ethyleneglycol acrylatemethacrylate, EGAMA). Sol-gel condensation of BMS in triethyleneglycoldimethacrylate (TGDMA) afforded in situ stable methacrylate-functional nanoparti- cle dispersions, with average nanoparticle diameter of 3-4 nm, as determined by means of element-specific transmission electron microscopy (TEM).