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Relaxation dynamic and electrical mobility for poly(methyl methacrylate)‐polyaniline composites
Author(s) -
Moussa Mohammed A.,
Ghoneim Ahmed M.,
Abdel Rehim Mona H.,
Khairy Sherif A.,
Soliman Mohamed A.,
Turky Gamal M.
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45415
Subject(s) - polyaniline , materials science , activation energy , emulsion polymerization , composite material , thermal stability , methyl methacrylate , poly(methyl methacrylate) , fourier transform infrared spectroscopy , polymerization , conductivity , methacrylate , polymer chemistry , chemical engineering , polymer , chemistry , engineering
Composites of emeraldine form of polyaniline (PAni) and poly(methyl methacrylate) (PMMA) are prepared by emulsion polymerization method in definite ratios. The chemical structure of the samples and their morphologies have been investigated by different techniques including FTIR, UV–vis, XRD, SEM, and TGA. Enhancement in thermal stability of the obtained composites by PAni additions has been confirmed. Alpha analyzer, in frequency range 0.1 Hz to 20 MHz, was employed to investigate the molecular dynamics of the prepared samples and the accompanied electrical conductivity at temperatures ranging from 223 to 423 K. Conductivity investigations showed that mobility has the more dominant effect on the charge transportation. The dynamic peak at lower temperatures of the PMMA has high activation energy (83.8 kJ/mol). While, Maxwill‐Wagner‐Siller process due to the interfacial polarization in the composites has only 7.5 kJ/mol activation energy. This is a clear indication of the ease of the investigated dynamic. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45415.