Premium
Core‐shell method of synthesis, characterizations, and ac conductivity studies of polyaniline/n‐TiO 2 composites
Author(s) -
Roy Aashis S.,
Anilkumar Koppalkar R.,
Prasad M. V. N Ambika
Publication year - 2011
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.33730
Subject(s) - materials science , polyaniline , composite material , composite number , fourier transform infrared spectroscopy , transmission electron microscopy , conductivity , monoclinic crystal system , titanium dioxide , scanning electron microscope , chemical engineering , polymer , crystal structure , nanotechnology , chemistry , polymerization , crystallography , engineering
Polyaniline/nano‐titanium dioxide composites (PANI/n‐TiO 2 ) were prepared using α‐dextrose as surfactant and ammonium per sulfate as oxidant. The PANI/n‐TiO 2 composite is characterized by Fourier transform infrared spectra and confirmed the presence of benzenoid and qunoide ring structures and also formation of free ions. The transmission electron microscopy study reveals that the size of TiO 2 is in the order of 7 nm where as the composite size is of the order of 13 nm; further, it is observed that the TiO 2 particles are intercalated to form a core shell of PANI. The X‐ray diffraction (XRD) studies show that the monoclinic structure of the composites. ac Conductivity, permittivity, and tangent loss studies on these samples suggest that these composites may be well suited for gas sensor. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011