Isoconversional kinetic analysis of bisphenol A benzoxazine cure

Abstract

This work is devoted to the isoconversional kinetic analysis of the cure of benzoxazine based on bisphenol A and aniline under both isothermal and non-isothermal conditions. The dependencies of the effective activation energy ($E_{\alpha })$ on the degree of conversion ($\alpha$) were evaluated according to the advanced isoconversional method developed by Vyazovkin. The shape of $E_{\alpha }$-dependencies revealed the complex nature of the curing process. The values of $E_{\alpha }$ changed from 90 to 160 kJ/mol during cure. The prediction of the isothermal curing process was performed.