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Preparation and Pyroelectric Properties of Poly(pentafluorostyrene)‐r‐Poly(4‐vinylaniline) Copolymer Films
Author(s) -
Xu Zuxun,
Wang Shimin,
Wang Lihua,
Fang Zhangjian,
Wang Xianbao
Publication year - 2008
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.200850119
Subject(s) - copolymer , materials science , pyroelectricity , polymer chemistry , chemical engineering , polymer , composite material , dielectric , optoelectronics , engineering , ferroelectricity
In this study poly(pentafluorostyrene)‐ ran ‐poly(4‐vinylaniline) (PPFS‐ r ‐PVA) was synthesized by solution polymerization with AIBN utilized as an initiator. The dilute THF solution of the resultant copolymer was spin‐coated onto clean Ag/Si(100) substrates, and then the copolymer film was electrically poled at 85 °C for 30 min using a plane poling method with a poling voltage of 7.0 kV. The pyroelectric coefficient was determined by a digital integral method and carried out with a charge integral instrument. It was observed that the average pyroelectric coefficient of the resultant PPFS‐ r ‐PVA was 20.4 µC/cm 2 K in the range of 20–45 °C, and the average dielectric loss is about 0.2298 between 3.2 × 10 4 –1.0 × 10 6 Hz.