VISCOELASTIC RELAXATIONS IN POLY(DIMETHYLPHENYL METHACRYLATES)
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Date
1994
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Abstract
Dynamic mechanical properties of poly(dimethylphenyl methacrylates) were studied considering the different positions of the methyl groups on the phenyl ring. In all cases a clear a relaxation can be observed which is associated to the polymer glass transition temperature (Tg). Nevertheless, at lower temperatures, viscoelastic activity is negligible. A correlation between the steric hindrance due to the methyl groups and the temperature at which the relaxation is detected, was established.