Viscoelastic relaxations in poly(dimethylphenyl methacrylates) |
| |
Authors: | Ricardo Díaz Calleja Ligia Gargallo Deodato Radić |
| |
Affiliation: | (1) Depto. de Termodinámica Aplicada, E.T.S.I.I., Universidad Politécnica de Valencia, Apartado 22012, E-46071 Valencia, Spain;(2) Depto. de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile |
| |
Abstract: | Summary Dynamic mechanical properties of poly(dimethylphenyl methacrylátes) were studied considering the different positions of the methyl groups on the phenyl ring. In all cases a clear 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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|