Relaxational behavior of poly(4-tetrahydropyranyl) methacrylate

Sanchis, MJ; Dominguez-Espinosa, G; Diaz-Calleja, R; Alegria, L; Gargallo, L.; Radic D.

Abstract

Complex permittivity of poly(4-tetrahydropyranyl methacrylate) (P4THPMA) was measured by dielectric spectroscopy. The spectra obtained show several relaxation processes labeled as δ, γ, β, and α in increasing order of temperature. These processes have been characterized and assigned to specific molecular motions. Comparison of the dielectric activity obtained for P4THPMA with those reported for poly(1,3-dioxan-5-yl-methacrylate) (PDMA) and poly(cyclohexyl methacrylate) (PCHMA) was performed. In fact, these three polymers have similar chemical structures with aliphatic rings in the ester residue. However, significant differences between the dielectric behavior of these polymers have been observed. In addition, complementary molecular mechanic (MM) calculations have been carried out. The energy barriers obtained by these calculations lead to energy barriers which are in relatively good agreement with those derived from the dielectric measurement by means Arrhenius plots. © 2006 Wiley Periodicals, Inc.

Más información

Título según WOS: Relaxational behavior of poly(4-tetrahydropyranyl) methacrylate
Título según SCOPUS: Relaxational behavior of poly(4-tetrahydropyranyl) methacrylate
Título de la Revista: JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volumen: 44
Número: 21
Editorial: John Wiley & Sons Inc.
Fecha de publicación: 2006
Página de inicio: 3135
Página final: 3147
Idioma: English
URL: http://doi.wiley.com/10.1002/polb.20952
DOI:

10.1002/polb.20952

Notas: ISI, SCOPUS