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Effect of the crosslinking degree on curing kinetics of an epoxy–anhydride styrene copolymer system

✍ Scribed by F. Heba-Laref; M. Mouzali; M. J. M. Abadie

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
129 KB
Volume
73
Category
Article
ISSN
0021-8995

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✦ Synopsis

The cure kinetics of a high molecular weight acid copolymer used as a hardener for a commercial epoxy resin (DGEBA) was studied by DSC. The systems were uncured and partially cured epoxy poly(maleic anhydride-alt-styrene) (PAMS) at different periods of time. The state of cure was assessed as the residual heat of reaction and was varied by controlling both the time and temperature of cure. The conversion degree of crosslinking increased with time and temperature. Additionally, the activation energy and reaction order were calculated by the Freeman-Carrol relation and showed a dependence on the conversion degree of crosslinking.

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