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A facile method to enhance ferroelectric properties in PVDF nanocomposites

Abolhasani, Mohammad Mahdi, Zarejousheghani, Fatemeh, Cheng, Zhenxiang and Naebe, Minoo 2015, A facile method to enhance ferroelectric properties in PVDF nanocomposites, RSC Advances, vol. 5, no. 29, pp. 22471-22479, doi: 10.1039/c4ra12221f.

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Title A facile method to enhance ferroelectric properties in PVDF nanocomposites
Author(s) Abolhasani, Mohammad Mahdi
Zarejousheghani, Fatemeh
Cheng, Zhenxiang
Naebe, Minoo
Journal name RSC Advances
Volume number 5
Issue number 29
Start page 22471
End page 22479
Total pages 9
Publisher Royal Society of Chemistry
Place of publication London, Eng.
Publication date 2015
ISSN 2046-2069
Summary Poly(vinylidene fluoride) (PVDF)/nanoclay composites were prepared using melt compounding. The effect of acrylic rubber (ACM) as a compatibilizer on different polymorph formation and on the ferroelectric properties of nanocomposites were investigated. The intercalation and morphological structure of the samples were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The infrared spectroscopy and X-ray analysis revealed the coexistence of β and γ crystalline forms in PVDF-clay nanocomposite, while in partially miscible PVDF/ACM/clay hybrids, three polymorphs of α, β and γ coexisted. The coefficients of electric field-polarization (E-P) Taylor expansion were calculated based on the Lorentz theory. Using a genetic algorithm, complex dielectric susceptibilities as well as the dielectric constants for each sample were calculated and optimized. The predicted dielectric constants were found to be in good agreement with the experimental results. A dielectric constant of 16 (10 Hz) was obtained for PVDF/ACM/clay (90/10/5), which was 40% higher than that of the PVDF-clay (100/5) nanocomposite without ACM. The improved dielectric performance of the nanocomposites can be attributed to the compatibilizing effect of ACM, which facilitated the growth of β polymorph in the sample.
Language eng
DOI 10.1039/c4ra12221f
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30073750

Document type: Journal Article
Collection: Institute for Frontier Materials
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