Frozen Polarization of Piezoelectric Polyimides

Autor:	José Luis Vilas, M. A. Perez-Jubindo, M. R. de la Fuente, L. M. León, M. San Sebastián, Tomasz Breczewski, B. Gonzalo
Rok vydání:	2009
Předmět:	Permittivity Materials science business.industry Dielectric permittivity Analytical chemistry Dielectric Condensed Matter Physics Polarization (waves) Piezoelectricity Electronic Optical and Magnetic Materials Dipole Optics business Piezoelectric polymer Polyimide
Zdroj:	Ferroelectrics. 389:114-121
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190902988226
Popis:	We report a comparative frozen polarization study in three piezoelectric polymers: one polyimide without –CN dipolar groups (poly0CN), and two more that differ in the position of the –CN dipolar group present in the repetition unit (poly2-4 and poly2-6). The values of the dielectric permittivity and frozen polarization show that the participation of N-phenylphthalyimide group depends strongly on the curing process. For totally cured samples this group has little influence on the value of remnant polarization. The study was performed by dielectric measurements and by Thermally Stimulated Depolarization Current (TSDC) technique.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::24786f08db3154f02ecefc8e3e54903d https://doi.org/10.1080/00150190902988226 Zobrazit plný text záznamu