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High Performance Thermoplastic Blends Modified by Potassium Hexatitanate for Dielectric Applications

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Abstract

In the present research, we explored the dielectric properties of polyvinylidene fluoride/polymethyl methacrylate blends modified by inorganic potassium hexatitanate (K2Ti6O13). The phase and structural morphology of the samples were analyzed in detail using X-ray diffraction, polarizing optical microscope, scanning electron microscope, and atomic force microscope (AFM) techniques. Microscopic analysis of the modified blends exhibits the effect of filler over the surface morphology of the polymer phases. The thermal properties of the prepared samples were estimated using thermogravimetric analysis. The dielectric properties of the modified blends were measured across broadband frequency as a function of temperature (30–150 °C). Dielectric constant (εr) was increased as a function of loading of K2Ti6O13 and decreased to relative dissipation factor (tanδ). Nanoscale two dimensional and three dimensional AFM topographic phase images demonstrated the effect of K2Ti6O13 which increased the average surface roughness (Ra) of the polymer blends. This investigation can be useful for designing a broad range of dielectric materials for engineering applications.

Graphical Abstract

High dielectric properties and characterization of modified thermoplastic blends as function of PHT loading.

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Acknowledgements

Authors are thanking Mr. Albert V. Tamashausky, Corporate Director of Technical Services, Asbury carbons, NJ, USA for providing potassium hexatitanate powder, Naval Research Board, Defense Research, and Development Organization (NRB-DRDO), New Delhi, (No. 259/Mat./11-12), for the electrical characterization facility availed from the project and VIT, Vellore for providing the SEM under DST-FIST, AFM and XRD central characterization facilities.

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  1. Polymer Nanocomposite Laboratory, Center for Crystal Growth, VIT, Vellore, Tamil Nadu, 632014, India

    E. Dhanumalayan & Girish M. Joshi

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  1. E. Dhanumalayan
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  2. Girish M. Joshi
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Correspondence to Girish M. Joshi.

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Dhanumalayan, E., Joshi, G.M. High Performance Thermoplastic Blends Modified by Potassium Hexatitanate for Dielectric Applications. J Inorg Organomet Polym 28, 1775–1786 (2018). https://doi.org/10.1007/s10904-018-0835-6

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  • DOI: https://doi.org/10.1007/s10904-018-0835-6

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