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A reação de cura entre amostras de resina epoxídica (EP) e compostos à base de mercaptana (SH), amino-fenol e amina modificada foi estudada nas regiões espectrais do infravermelho médio (MIR) e próximo (NIR). Observou-se, basicamente, que a espectroscopia FT-NIR evidencia melhor as alterações espectrométricas ocorridas durante as reações estudadas, permitindo detectar, inclusive, o agente de cura em menor proporção no sistema epoxídico. The cure reaction of epoxy resin (EP) and curing agents based on polymercaptans (SH), amine-phenol and modified amine was studied in the MIR and NIR spectral regions. It was observed that the FT-NIR shows better the spectrometric changes of the reactions studied, which makes it possible to detect the curing agent in lower contents in epoxide systems

Aplicação de FT-MIR e FT-NIR ao estudo de reação de cura de sistemas epoxídicos