Thermal analysis of styrene–alkyl methacrylate polymers. II. Thermogravimetric kinetics
- 1 August 1978
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 22 (8) , 2285-2293
- https://doi.org/10.1002/app.1978.070220820
Abstract
The thermal stability and degradation kinetics of several polystyrenes and styrene–alkyl methacrylate copolymers and terpolymers with a number‐average molecular weight (M̄n) of 6000–250,000 g/mole have been studied using dynamic thermogravimetry (TG). The degradation kinetics of each polymer sample have been successfully attributed to a sample first‐order reaction expression. The results indicate that the thermal stability and degradation kinetics of the polymers are independent of the size of the molecules within the molecular weight range investigated. The steric hindrance effects of the pendent groups appear to be responsible for the improved thermal stability and resistance of CC bond scission in the styrene–alkyl methacrylate copolymers and terpolymers.Keywords
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