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Electrical and Mechanical Properties of Polystyrene—Poly(methyl methacrylate) Blends

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Polystyrene modified PMMA blends were prepared by the extrusion moulding technique with different weight percentage. The prepared blends were characterized by FTIR (structural study) and SEM (surface morphology). The important characteristic peaks of pure PS and PMMA appearing in the spectra confirm the compatible blends results in flourishing the interface between the polymers. DC conductivity increases with increase in temperature as well as PMMA percentage up to 6 wt% and the highest conductivity is found to be 12 × 10–9 S/cm. This increase in conductivity is due to the increase in charge density and extended charge length which is confirmed by NTC plot. Further the mechanical study was carried out using UTM and found that the tensile strength and modulus is enhanced as a function of PMMA concentration. DSC plots indicate that there is an increase in melting point with increase in PMMA concentration in PS which is supported by TGA graphs showing that the thermal stability increases due to addition of PMMA. Therefore these materials have potential use in technological applications.
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Keywords: BLENDS; COEFFICIENT; NEGATIVE THERMAL; POLY(METHYL METHACRYLATE); POLYSTYRENE; SCANNING ELECTRON MICROSCOPY

Document Type: Research Article

Publication date: September 1, 2015

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  • Journal of Advanced Physics is an interdisciplinary peer-reviewed journal consolidating research activities in all experimental and theoretical aspects of advanced physics. The journal aims in publishing articles of novel and frontier physics that merit the attention and interest of the whole physics community. JAP publishes review articles, full research articles, short communications of important new scientific and technological findings in all latest research aspects of physics.
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