| Abstract
| - The reactivities of cis and trans isomers of 1,2-diaminocyclohexane (1,2-DCH)/epoxy resinwere studied separately. We found that the primary amine hydrogen disappears in both isomers at asimilar rate when they react with an epoxy resin. However, the formation of tertiary amines differsconsiderably. The reactivity of the second amine hydrogen for the trans isomer is greater than that forthe cis isomer, and this difference is observed as the reaction proceeds. The main reason for the slowerdisappearance of the cis secondary amine is steric hindrance and this fact is observed in the preexponentialfactors, glass transition temperatures (Tg), and ratio of rate constants of secondary to primary amine(R). The reaction was followed by Fourier transform infrared spectroscopy in the near-infrared range.The values of Tg were obtained by differential scanning calorimetry.
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