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In situ polymerization of tetraethoxysilane in poly(vinyl acetate)
Author(s) -
GirardReydet Emmanuel,
Lam Thanh My,
Pascault Jean Pierre
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950112
Subject(s) - vinyl acetate , polymer chemistry , polymerization , nanocomposite , covalent bond , homogeneous , in situ polymerization , in situ , materials science , chemical engineering , polymer , phase (matter) , chemistry , copolymer , organic chemistry , composite material , physics , engineering , thermodynamics
The in situ polymerization of tetraethoxysilane (TEOS) in poly(vinyl acetate) (PVAc) yields homogeneous and transparent nanocomposite materials. It was shown that covalent bonds occur between the organic chains and the inorganic clusters, preventing macroscopic phase separation. For an initial amount of TEOS higher than a critical value, gel formation is observed. Up to this critical TEOS content, improved mechanical properties, which persist at high temperatures, are obtained.