In the present research polyvinylidene fluoride was modified by loading the ceramic titanium boride (TiB2) through sonication route. The structure, morphology, thermal, dielectric and softness properties were disclosed as a function of TiB2 weight fraction composition. The decreased interplanar distance d (Å) and increased crystallinity D (Å) confirmed by X-ray diffraction technique. The C=C stretching band is shifted due to loading (wt%) of TiB2 confirmed by Fourier transform infrared spectroscopy. Electronic structure (π–π* transition at λ = 271 nm) demonstrated the decrease in direct band gap (Eg) of nanocomposites has been confirmed by Ultraviolet–Visible spectroscopy. Optical polarizing microscopy confirms the dispersion of TiB2 in host polymer system. The TiB2 aggregated morphology was observed by the scanning electron microscopy (SEM). Subatomic nanoscale topography confirm the textured pattern of fillers by atomic force microscopy. The energy dispersive X-ray spectroscopy (EDXS) reveals the presence of titanium (Ti) and boron (B) elemental composition. The increased glass transition temperature (Tg), melting temperature (Tm) and thermal degradation (Td) is due to TiB2 weight fraction loading by thermogravimetric analysis. Dielectric constant (εr) increased due to loading of TiB2 (wt%) and measured as a function of frequency and obeys the Maxwell–Wagner–Sillars interfacial polarization model. The composition of TiB2 demonstrated the influence on decreased dissipation factor (tan δ) ultimately to control the dielectric loss relatively. The decrease in softness due to crystalline phase of nanocomposites examined by shore A durometer test. The prospectus and scope of this investigation may have headway to high charge storing multilayer capacitors and electronic applications.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Dec 19, 2017
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