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Methylmethacrylate-styrene (MMA-St) random copolymerwas synthesized by suspension copolymerization.
The thermal degradation of MMA-St copolymer and EPS lost foams was studied by non-isothermal
thermal gravimetric analysis under nitrogen purge. Thermal decomposition behavior of MMA-St copolymer
lost foam was examined and compared with EPS. It was found that EPS foam starts to decompose at
higher temperatures than MMA-St copolymer foam in all heating rates. The apparent activation energy
was calculated by the Flynn-Wall-Ozawa method. It has been concluded that the model fitting methods
unable to reveal the complexity of the pyrolysis process and the model-free methods can be suggested as
a reliable way of determining the kinetic parameters.
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