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Thermosetting bismaleimide/reactive rubber blends: Curing kinetics and mechanical behavior
Author(s) -
Abbate M.,
Martuscelli E.,
Musto P.,
Ragosta G.
Publication year - 1997
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/(sici)1097-4628(19970801)65:5<979::aid-app16>3.0.co;2-n
Subject(s) - thermosetting polymer , curing (chemistry) , materials science , kinetics , copolymer , natural rubber , composite material , acrylonitrile , toughness , nitrile rubber , fourier transform infrared spectroscopy , toughening , dynamic mechanical analysis , polymer chemistry , polymer , chemical engineering , physics , quantum mechanics , engineering
A maleimido‐terminated butadiene–acrylonitrile copolymer was employed as an impact modifier for a commercial thermosetting bismaleimide resin. FTIR spectroscopy was used to monitor in real time the kinetics of the curing process in this blend system at different temperatures. The toughening agent was found to produce strong effects on the kinetics and mechanism of the curing process. The fracture toughness parameters K c and G c showed a substantial enhancement as the rubber content in the blend was increased. Only a modest reduction of the elastic modulus and of the compressive yield stress was brought about by incorporation of the impact modifier. © 1997 John Wiley & Sons, Inc. J Appl Polm Sci 65:979–990, 1997