Polymer and Materials Science
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
Dielectric relaxation measurements were made on methyl methacrylate - styrene and methyl methacrylate-p-chlorostyrene copolymers at temperatures higher than the glass transition temperature Tg. It was found that the temperature dependence of the relaxation time can be described satisfactorily by an expression derived recently for chain motion in amorphous polymers. The temperature Tg obtained from the expression agrees well with that determined by differential thermal analysis.
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