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Copolymerization of the silane‐modified polyvinylimidazole(1) as a metal corrosion inhibitor
Author(s) -
Jang Jyongsik,
Kim Hyuncheol
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070561111
Subject(s) - copolymer , azobisisobutyronitrile , silane , polymer chemistry , thermal decomposition , thermal stability , monomer , chemistry , benzene , decomposition , materials science , organic chemistry , polymer
Abstract The free radical copolymerization of vinyl imidazole (VI) with γ‐methacryloxypropyltrimethoxy silane (γ‐MPS) by using azobisisobutyronitrile (AIBN) as an initiator was carried out in benzene at 68°C. The copolymer compositions at various monomer feeds were investigated by elemental analysis. The reactivity ratios of two monomers were determined by the Finemann‐Ross method: r 1 (VI) = 0.22, r 2 (γ‐MPS) = 3.18. From these results, it could be concluded that silane‐modified polyvinylimidazoles were random copolymers (0< r 1 r 2 <1). Thermal stability of decomposition of the copolymer increased with increasing the mole ratio of VI in the copolymer. Thermal decomposition of the copolymer was caused by the decomposition of the γ‐MPS unit. However, thermal stability above 300°C and maximum thermal decomposition temperature increased with increasing the mole ratio of γ‐MPS due to the crosslinking reaction of hydrolyzed γ‐MPS unit. © 1995 John Wiley & Sons, Inc.