Study of the Effects of Oxygen Transport and Temperature History of the Chemistry of PMMA Pyrolysis

摘要

Thermal degradation and thermal oxidative degradation of commercially available poly(methyl methacrylate) were studied at heating rates of 5, 100, and 1000 K/min. Sample residue weights and molecular weights were measured during the degradation. Results indicate that previously obtained kinetic parameters from low heating rates (0.5-5 K/min.) in inert gas agree with the results obtained from the high heating rate experiments. The effects of oxygen on degradation diminishes with higher heating rate.