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In situ synthesis of optically transparent interpenetrating organic/inorganic networks
Author(s) -
Widmaier JeanMichel,
Bonilla Gabriela
Publication year - 2006
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.774
Subject(s) - materials science , thermogravimetric analysis , polyurethane , silane , polymerization , methacrylate , hybrid material , in situ polymerization , ternary operation , chemical engineering , methyl methacrylate , polymer chemistry , in situ , copolymer , organic chemistry , composite material , polymer , nanotechnology , chemistry , computer science , engineering , programming language
Ternary hybrid interpenetrating networks composed of polyurethane (PU), poly(methyl methacrylate) (PMMA) and silica were prepared by in situ bulk polymerization. The inorganic phase was generated from tetraethoxysilane (TEOS) via sol‐gel chemistry. Highly transparent films were successfully synthesized using (trimethoxysilyl)propyl methacrylate (TMSPM) and isocyanatopropyl triethoxy silane (IPTES) as dual coupling agents. In order to minimize undesirable side‐reactions, PU was allowed to prepolymerize first before introduction of water into the reactive medium. According to infrared spectroscopic analysis and thermogravimetric studies of the hybrid materials, the condensation reaction was not complete certainly due to the presence of the organic components. The experimental procedure has to be optimized before any application of these hybrids as damping materials. Copyright © 2006 John Wiley & Sons, Ltd.