| Abstract
| - The degradation rate of a polymer mixture depends on the particular polymer mixture, and thepresence of a second polymer can increase, decrease, or not affect the degradation rate of thefirst polymer. The degradation rates of poly(vinyl acetate) in both the presence and absence ofpolystyrene at various temperatures (220−250 °C) were experimentally determined. Themolecular weight distributions of the polymers were obtained by analyzing the samples by gelpermeation chromatography. Continuous distribution kinetics were employed for determiningthe degradation rates of binary polymer mixtures. The results indicated that, because of theinteraction of mixed radicals with polymer by hydrogen abstraction, the degradation rates ofpoly(vinyl acetate) are considerably enhanced in the presence of polystyrene, while thedegradation rate of polystyrene decreases.
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