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Thermal analysis of styrene–alkyl methacrylate polymers. II. Thermogravimetric kinetics
Author(s) -
Wen Walter Y.,
Lin Jacob W.
Publication year - 1978
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1978.070220820
Subject(s) - polymer chemistry , styrene , thermal stability , alkyl , copolymer , thermogravimetry , methacrylate , thermogravimetric analysis , kinetics , polymer , materials science , methyl methacrylate , chemistry , organic chemistry , inorganic chemistry , composite material , physics , quantum mechanics
Abstract The thermal stability and degradation kinetics of several polystyrenes and styrene–alkyl methacrylate copolymers and terpolymers with a number‐average molecular weight ( M̄ n ) 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.