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Study of crosslinking AMS/DGEBA system by FTIR

✍ Scribed by A. Cherdoud-Chihani; M. Mouzali; M. J. M. Abadie

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 321 KB
Volume: 69
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19980808)69:6<1167::aid-app14>3.0.co;2-q

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✦ Synopsis

Fourier transform infrared spectroscopy (FTIR) was used to follow the curing of the diglycidylether of bisphenol A (DGEBA) typical epoxide resin by poly(styrene-alt-maleic anhydride) (AMS), the reaction being accelerated by triethylamine (TEA) in the presence of methanol. The study was done in an isothermal mode for four temperatures: 85, 82, 80, and 75ЊC. We followed, for each temperature, the variation of the area of the epoxy band (916 cm 01 ) versus time. After 200 min of reaction, the degree of conversion of epoxy is 0.5 at 85ЊC. A postcure at 100ЊC during 96 h allows one to reach a total conversion of epoxy. The reaction mechanism involves three steps to form the tridimensional network.

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