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The mechanism of cure (pregel) of a highly purified diglycidylether of bisphenol A (DGEBA, 99.6% molecular weight = 340 g mol -1 ) with 1,3-bis(aminomethyl)-cyclohexane (1,3 BAC) was studied. A kinetic model was developed which considered the different reactivities of the amine hydrogens involved in the process. The possibility of simultaneous evaporation of the starting monomers and...
In epoxy-amine kinetic studies, the determination of the ratio of rate constants, (R) for hydrogens on primary and secondary amine groups is very important; in fact R is related to the network morphology. In this paper we show that R can be directly calculated from the ratio of the concentrations of primary to secondary amine at (d[A 2 ]/dt) max , d[A 2 ]/dt being the reaction...
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