Exclusive self-aligned β-phase PVDF films with abnormal piezoelectric coefficient prepared via phase inversion?
Chemical Communications Pub Date: 2015-04-08 DOI: 10.1039/C5CC01688F
Abstract
Self-polarised poly(vinylidene fluoride), (PVDF), films were prepared via a facile phase-inversion technique wherein the polymorphism of the films was controlled from exclusive α- (>90%) to β-phase (>98%) by simply varying the quenching temperature from 100 °C to ?20 °C, respectively. At low temperatures, the β-phase crystallites were found to be self-aligned, with the PVDF thin films possessing a high piezoelectric coefficient of up to ?49.6 pm V?1. The extraordinarily high β-phase and piezoelectric coefficient of these PVDF films make them suitable for electroactive and energy harvesting applications.
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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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