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Chain Dynamics of Polymers with Highly Flexible Side Groups
Author(s) -
Riande Evaristo,
DíazCalleja Ricardo
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200650505
Subject(s) - polymer , dielectric , polymer chemistry , ansatz , materials science , side chain , relaxation (psychology) , methacrylate , methyl methacrylate , spectral line , spectroscopy , chemical physics , chemistry , polymer science , polymerization , physics , composite material , optoelectronics , quantum mechanics , psychology , social psychology
Summary: The relaxation behaviour of poly(5‐acryloxy‐5‐methyl‐2,3‐dioxacyclohexne), poly(2,3‐dichlorobenzyl methacrylate) and poly(3‐chlorobenzyl methacrylate) was thoroughly studied by broadband dielectric spectroscopy with the aim of investigating how the chemical structure affects the response of polymers to electric perturbation fields over a wide temperature window. Retardation spectra calculated from dielectric isotherms utilizing linear programming regularization parameter techniques were used to deconvolute strongly overlapped absorptions. Special attention is paid to both the splitting region and the fitting of the Williams ansatz to the experimental results. Attempts are made to explain the molecular origin of the relaxations observed in the retardation spectra of the polymers.