PERTANIKA JOURNAL OF TROPICAL AGRICULTURAL SCIENCE

 

e-ISSN 2231-8542
ISSN 1511-3701

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Ferroelectric Stability of Annealed PVDF-TrFE Thin Film Incorporated with MgO Nanofillers

Mohamad Hafiz Mohd Wahid, Rozana Mohd Dahan, Adillah Nurashikin Arshad, Habibah Zulkefle, Siti Zaleha Sa'ad, Mohamad Rusop Mahmood, W. C. Gan and Wan Haliza Abd. Majid

Pertanika Journal of Tropical Agricultural Science, Volume 25, Issue S, March 2017

Keywords: Annealing, dielectric, ferroelectric, MgO, PVDF-TrFE, spin coating

Published on: 05 Dec 2017

Spin coated polyvinlylidenefluoride-trifluoroetylene (PVDF-TrFE 70/30mol%) copolymer thin film were initially produced and annealed at varying temperatures (100°C to 160°C). The morphology, dielectric and ferroelectric analysis showed that PVDF-TrFE film annealed at 120°C produced the highest remnant polarization, Pr of 92 mC/m², with orderly and grain-like shaped crystallites. The filled PVDF-TrFE, loaded with various volume percentages (1 - 7%) of Magnesium Oxide (MgO) nanofillers and then, annealed at 120°C, produced homogenous filler distribution with low agglomerates, especially for 3% PVDF-TrFE filled films. Moreover, the annealed PVDF-TrFE/MgO(3%) generated the highest value of Pr in comparison to the other filled nanocomposite thin films. Most importantly, the saturation of hysteresis loop, Ps for annealed PVDF-TrFE/MgO(3%) film was relatively improved by 20% as compared to the unfilled annealed thin film. This study established that, 3% MgO loaded in PVDF-TrFE thin film and annealed at 120 °C demonstrated a stable ferroelectric thin film, closed to an ideal ferroelectric film, in which the ratio Pr/Ps for the film established a value approaching unity (value of 1).

ISSN 1511-3701

e-ISSN 2231-8542

Article ID

JST-S0161-2016

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