Kinetics of Anhydride Curing of lsophthalic Diglycidyl Ester Using Differential Scanning Calorimetry

Khanna, Umang and Chanda, Manas (1993) Kinetics of Anhydride Curing of lsophthalic Diglycidyl Ester Using Differential Scanning Calorimetry. In: Journal of Applied Polymer Science, 49 (2). pp. 319-329.

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Abstract

The cure reaction of a model diglycidyl ester, bis- (2,3-epoxypropyl) -1,3-benzenedicarboxylate, with hexahydrophthalic anhydride as the curing agent and benzyldimethylamine as the catalyst, was studied by differential scanning calorimetry using an isothermal approach over the temperature range 100-135°C. The results indicate that the cure reaction is autocatalytic in nature and does not follow simple nth-order kinetics. A semiempirical equation for autocatalytic systems containing two rate constants and two reaction orders, viz., 0.5 and 1.5, provided a good phenomenological description of the cure kinetics up to the point of vitrification. With the inclusion of a diffusion factor into this model, it was, however, possible to predict with precision the cure kinetics over the whole range of conversion covering both pre- and postvitrification stages and over the entire temperature range of 100-135°C employed for isothermal curing.

Item Type:	Journal Article
Publication:	Journal of Applied Polymer Science
Publisher:	John Wiley & Sons, Inc.
Additional Information:	The copyright belongs to John Wiley & Sons, Inc.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	20 Mar 2006
Last Modified:	19 Sep 2010 04:24
URI:	http://eprints.iisc.ac.in/id/eprint/6100

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