Journal
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS
Volume 59, Issue 10, Pages 777-785Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2010.483217
Keywords
FTIR; polyaniline; sol gel; spin coating; TiO2; X-ray diffraction
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Funding
- Department of Science and Technology, Government of India, New Delhi [SR/FTP/PS-09/2007]
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Thin films of polyaniline (PANi) and PANi:titanium oxide (TiO2) composites have been synthesized by solgel spin coating technique. The TiO2 powder of particle size 50-60nm was synthesized by sol-gel technique and the polyaniline was synthesized by chemical oxidative polymerization of aniline. The composite films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) Fourier transform infrared (FTIR) and UV-vis spectroscopy, and the results were compared with polyaniline films. The intensity of the diffraction peaks for PANi:TiO2 composites is lower than that for TiO2. The characteristic FTIR peaks of PANi were found to shift to a higher wave number in the PANi:TiO2 composite. These observed effects have been attributed to the interaction of TiO2 particles with PANi molecular chains. The room temperature resistivity of polyaniline:nano-TiO2 composite is 3.43x103cm and the resistivity of pure nano-TiO2 particles is 1.60x106cm.
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