作者: Giulio Malucelli , Aldo Priola , Marco Sangermano , Ezio Amerio , Elisa Zini
DOI: 10.1016/J.POLYMER.2005.02.045
关键词: Polymer chemistry 、 Methacrylate 、 Materials science 、 Prepolymer 、 UV curing 、 Thermal stability 、 Sol-gel 、 Oligomer 、 Photopolymer 、 Hybrid material
摘要: Abstract Hybrid organic–inorganic nanocomposites containing PEO segments linked to an acrylate–methacrylate network were prepared through a dual-curing process, involving photopolymerization and condensation of alkoxysilane groups. A Polyethyleneglycol 600 α,ω diacrylate (PEGDA 600) similar oligomer Bisphenol unit methacrylate groups (BEMA 1400) used. Mixtures the oligomers together with methacryloyloxypropyltrimethoxysilane (MEMO) tetraethoxysilane (TEOS) prepared. The kinetics reactions was investigated. conditions suitable for obtaining complete conversion both reactive settled up. obtained films perfectly transparent amorphous. Tg values hybrids found increase by increasing TEOS content condensation. TEM analyses indicated formation silica phases at nanometric level; TGA curves revealed higher thermal stability hybrid structures.