INTERACTION OF COMPONENTS AND CONDUCTIVITY IN POLYANILINE – POLYMETHYLMETHACRYLATE NANOCOMPOSITES

Aksimentyeva O.I. and Konopelnyk O.I. and Opaynych I. and Tsizh B.R. and Ukrainets A. and Ulansky Y. and Martyniuk G.V. (2010) INTERACTION OF COMPONENTS AND CONDUCTIVITY IN POLYANILINE – POLYMETHYLMETHACRYLATE NANOCOMPOSITES. Reviews on advanced materials science (№23). pp. 185-188. ISSN 1605-8127

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Abstract

Polymer nanocomposites of poly(methyl methacrylate) (PMMA) with the conducting polymer – polyaniline (PANI) were prepared by blending polymer solutions in a mixed organic solvent. It is found that electrical conductivity of PMMA-PANI composites depends on the PANI volume content with an extremely low “percolation threshold” near the 1.0% of the PANI. In the concentration interval of 2-10 vol.% of PANI a specific conductivity exceeding one for acid doped PANI is observed in PMMA-PANI composites. Introducing a conducting polymer into a dielectric PMMA matrix slightly decreases the glass transition temperature, causing the flow temperature to rise significantly. It has been suggested that the increasing conductivity in PMMA-PANI composites is caused by an interaction of PANI nitrogen atoms with the functional groups of PMMA leading to additional doping of PANI.

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