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Thermal analysis and mechanical characterization of maleimide‐functionalized benzoxazine/epoxy copolymers
Author(s) -
Ishida Hatsuo,
Ohba Sharon
Publication year - 2006
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.22499
Subject(s) - maleimide , copolymer , glass transition , epoxy , materials science , monomer , polymer chemistry , flexural strength , flexural modulus , polymer , dynamic mechanical analysis , polymerization , fourier transform infrared spectroscopy , composite material , chemical engineering , engineering
Maleimide‐functionalized benzoxazine is copolymerized with epoxy to improve toughness and processibility without compromising the thermal properties. The incorporation of maleimide functionality into the benzoxazine monomer results in a high performance polymer. All three possible polymerization reactions are confirmed using Fourier transform infrared (FT‐IR) spectroscopy. While maleimide‐functionalized benzoxazine has a glass transition temperature, T g , of 252°C, a further 25°C increase of T g is observed when copolymerized with epoxy. The flexural properties are also measured, and the copolymers exhibit a flexural modulus of 4.2–5.0 GPa. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1670–1677, 2006