Development of amine hydrogen equivalent weight determinaton method produced by differential scanning calorimetry

A method for determining the amine hydrogen equivalent weight using differential scanning calorimetry has been developed. A series of differential scanning calorimetry experiments were conducted on amine hardeners of varying molecular architectures in case of method’s validation. The results demonstrate method’s applicability for hardeners which amine equivalent weight cannot be determined properly by traditional titration or spectroscopic methods. Additionally, a step-by-step analytical algorithm was established to streamline the characterization of such challenging hardeners. This method offers improved precision and expands the range of amines suitable for stoichiometric calculations in epoxy curing systems.

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