Abstract
To improve the compatibility between the ceramic particle and polymer matrix, the surface modifier polyethylene glycol (PEG) was used for the modification of BaTiO3 (BT) particles as fillers in the poly(vinylidene fluoride) (PVDF) matrix via solution casting techniques. The structural analysis of the composite characterized by X-ray diffraction confirms the tetragonal structure. The results showed that the PEG modified BT-PVDF composites had a higher dielectric constant (≈192) and relatively lower dielectric loss value at 1000 Hz. The Nyquist plot suggests the contribution of only bulk effect present in the composites. The AC electrical conductivity studies obey Jonscher’s universal power law by fitting AC conductivity data which reveals the potential utility of the composites for ideal capacitor and microscopic reasons for this improvement were presented. Furthermore, the remnant polarization was significantly improved and maximum polarization was observed for PEG modified BT-PVDF composites.
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Moharana, S., Mishra, M.K., Behera, B. et al. Enhanced dielectric properties of polyethylene glycol (PEG) modified BaTiO3 (BT)-poly(vinylidene fluoride) (PVDF) composites. Polym. Sci. Ser. A 59, 405–415 (2017). https://doi.org/10.1134/S0965545X17030130
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DOI: https://doi.org/10.1134/S0965545X17030130