Effect of simultaneous polyaddition reaction on the curing of epoxides

Bokare, U. M. ; Gandhi, K. S. (1980) Effect of simultaneous polyaddition reaction on the curing of epoxides Journal of Polymer Science: Polymer Chemistry, 18 (3). pp. 857-870. ISSN 0887-624X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pol.198...

Related URL: http://dx.doi.org/10.1002/pol.1980.170180307

Abstract

Epoxy-amine curing reactions were theoretically studied using expectation theory taking into account the different reactivities of (1) the primary and secondary amine hydrogens and (2) the secondary hydroxyl group generated when an amine reacts with an epoxy group. The curing compositions and the fractional conversions at the gel point were computed. Generally the hydroxyl groups react slower than the amines and user these conditions, the reactivity of the OH group has a significant effect only when there is an intial excess of epoxide over the amine. The hydroxyl activity effectively increases the functionality of the epoxides and gelation can occur where it may not be expected.

Item Type:Article
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ID Code:11521
Deposited On:16 Nov 2010 13:51
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