The thermal degradation process of thermoplastic/thermoset alloy

The thermal degradation process of Poly(phenylenne ether) (PPE)/Triallylisocyanurate (TAIC) alloy was investigated. The alloy creates a bi-continuous phase during reaction-induced phase separation. PPE has high thermal stability due to rearrangement of main chain. Several kinetics data such as activation energies, 1 st order kinetic expression, and reaction constants show that mixing with, TAIC accelerated thermal degradation of PPE. Monomeric compound analysis of thermal degradation by Py-GC/MS shows that the amount of 3,5-dimethylphenol in PPE/TAIC is 3-times as much as that in PPE. This is due to the fact that TAIC-graft-PPE is difficult to rearrange as regards main chain and main chain scission of PPE is likely.