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Abstract
Blends of resole and epoxy were prepared by physical mixing, and cured with 30% polyamide based on blend resin and polyamide. Degradation of each sample was studied by dynamic thermogravimetric analysis in nitrogen atmosphere at a heating rate of 10°C min−1. The degradation of blends of epoxy and resole having 30 wt % polyamide proceeded with 0.50th order. This result was found with the Coats-Redfern equation using best-fit analysis, and further confirmed by linear regression analysis. The validity of data was checked by t test analysis. From this value of reaction order, activation energy (E) and pre-exponential factor (Z) were calculated. The values of activation energy increased, whereas the values of pre-exponential factor decreased as the resole content in the blend decreased from 100 to 0 wt %.