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Investigation on FT-IR spectra and dielectric property of PVDF/inorganic composites

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Abstract

In order to explore the effects of ceramics’ contents on composites’ macro-performance and microscopic structure, polyvinylidene fluoride/barium titanate composites were prepared by a coating technique. The PVDF/BaTiO3 (Bi4Ti3O12) composites are selected as research objects. It was observed that BaTiO3 (Bi4Ti3O12) powders with different ceramics’ contents affected the performance of PVDF/BaTiO3 (Bi4Ti3O12) composites’ dielectric. As the content of inorganic powders increases in some extent, dielectric constant of PVDF/inorganic powder composites increases. The microscopic structures of the materials were further studied. A red-shift was observed by Fourier transform infrared spectroscopy (FT-IR). Results of X-ray diffraction and FT-IR on PVDF/BaTiO3 showed that both the physical role (induction of β phase and interface defect) and the chemical bonding effect between BaTiO3 and PVDF affect the dielectric property of the composites. The chemical bonding effect was also observed in PVDF/Bi4Ti3O12 composites by FT-IR. Our results suggest that the intercoupling between fluorine in polyvinylidene fluoride and oxygen vacancy in barium titanates plays an important role in this kind of ferroelectric organic–inorganic composites. Overall, this paper provides some new and useful insights about the relationship between the physical property of PVDF/ceramic composites’ and composites’ microscopic structure.

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Acknowledgments

The authors would like to thank the National Science Foundation of China (60807036), the Leading Foundation of Shanghai (08JC1417200), and the Laboratory of Rare Earths Functional Materials of Shanghai for supporting the research.

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Authors and Affiliations

  1. Key Laboratory of Resource Chemistry of Ministry of Education, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China

    Yaping Qi, Lijing Pan, Li Ma, Pan Liao, Junxiu Ge, Donghua Zhang, Qianqian Zheng, Baiwei Yu, Yanxue Tang & Dazhi Sun

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  1. Yaping Qi
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  2. Lijing Pan
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  3. Li Ma
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  4. Pan Liao
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  5. Junxiu Ge
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  6. Donghua Zhang
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  7. Qianqian Zheng
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  8. Baiwei Yu
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  9. Yanxue Tang
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  10. Dazhi Sun
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Correspondence to Dazhi Sun.

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Qi, Y., Pan, L., Ma, L. et al. Investigation on FT-IR spectra and dielectric property of PVDF/inorganic composites. J Mater Sci: Mater Electron 24, 1446–1450 (2013). https://doi.org/10.1007/s10854-012-0948-6

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  • DOI: https://doi.org/10.1007/s10854-012-0948-6

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