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High Permittivity Poly (methyl methacrylate)/Sr2TiMnO6 Composites for high energy storage capacitor application.

Author : P.Thomas ,B.S.Dakshayini and G.K.Mahadevaraju

Pages : 129-134
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High permittivity Poly (Methyl Methacrylate) (PMMA) and Sr2TiMnO6 (STMO) composites were fabricated via melt mixing followed by hot pressing technique. These were characterized using X-ray diffraction (XRD), Scanning electron microscopy (SEM), thermo gravimetric (TGA), Density, Hardness, electrical properties like Volume resistivity, Permittivity and AC conductivity. SEM revealed that the crystallites are well distributed and the porosity is almost negligible. Both density and hardness were improved as the STMO content increased in the PMMA matrix. Addition of STMO in PMMA reduces the resistivity of the composite due to the increase in the conductivity of the composite as revealed by the AC conductivity. Permittivity values as high as 23 @ 100 Hz has been achieved (PMMA+STMO-50%), demonstrating that this PMMA+STMO composite can be exploited for the fabrication of high energy storage capacitor application.

Keywords: Poly(Methyl Methacrylate) (PMMA): CaCu3Ti4O12 (CCTO): Polymer composite: Melt: SEM: Thermogravimetric: Dielectric Properties.

Article published in the Proceedings of National Conference on ‘Women in Science & Engineering’ (NCWSE 2013), SDMCET Dharwad




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