Dielectric relaxation behaviour of poly(cyclobutyl methacrylate)s

Diaz-Calleja, R; Garcia-Bernabe, A; Sanchez-Martinez, E; Hormazabal, A; Gargallo, L.; Radic D.

Abstract

Dielectric behaviour of two poly(methacrylate)s with cyclobutyl groups in the side-chains has been studied. This investigation was performed by determining the dielectric permittivity and loss in terms of frequency and temperature for poly(cyclobutyl methacrylate) (PCBuM) and poly(cyclobutylmethyl methacrylate) (PCBuMM). Dynamic dielectric measurements show sub-glass relaxations, probably due to motions in the lateral chain, including the cyclobutyl ring. The effect of the insertion of a flexible spacer group into the side-chain is also analyzed. The ? relaxations were analyzed in terms of the Havriliak-Negami equation and the free volume theory tested according to the Vogel-Fulcher-Tamman-Hesse equation. The conductive and interfacial phenomena were studied by hopping and MacDonald-Coelho models. © 2002 Society of Chemical Industry.

Más información

Título según WOS: Dielectric relaxation behaviour of poly(cyclobutyl methacrylate)s
Título según SCOPUS: Dielectric relaxation behaviour of poly(cyclobutyl methacrylate)s
Título de la Revista: POLYMER INTERNATIONAL
Volumen: 51
Número: 12
Editorial: Wiley
Fecha de publicación: 2002
Página de inicio: 1448
Página final: 1458
Idioma: English
URL: http://doi.wiley.com/10.1002/pi.1084
DOI:

10.1002/pi.1084

Notas: ISI, SCOPUS