FIELD-INDUCED STRUCTURAL-CHANGES AND DIPOLE ORIENTATION IN POLY(VINYLIDENE) FLUORIDE

Authors
DANZ R BUCHTEMANN A LATOUR M
Citation
R. Danz et al., FIELD-INDUCED STRUCTURAL-CHANGES AND DIPOLE ORIENTATION IN POLY(VINYLIDENE) FLUORIDE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 230, 1993, pp. 421-426
Citations number
7
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
230
Year of publication
1993
Pages
421 - 426
Database
ISI
SICI code
1058-725X(1993)230:<421:FSADOI>2.0.ZU;2-3
Abstract
Infrared spectra of beta-PVDF films under the influence of an electric field were registered for 13 cycles of field strength. Butterfly-shap ed hysteresis curves due to dipole orientation changes were obtained f or the absorbances as well as for the frequencies of the bands at 445 and 510 cm-1. Investigations of alpha-PVDF show considerable changes i n the spectra after polarization at field strengths of 180 MV/m to 320 MV/m. The absorbance decreases of the bands 218 cm-1 and 616 cm-1 wer e discussed in terms of a conformation conversion and of an alignment of the CF2-dipoles in alpha-PVDF.