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CHEMICAL MODIFICATION AND CONTROL OF POLYANILINE NANOCOMPOSITES CONDUCTIVITY BY RADIATION TECHNIQUE IN PVA MATRIX

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Author(s): M.A. ALI | E. SAION | Y. Noorhana | A. KASSIM | K.M. DAHLAN | K. A. Rabaeh | I. SHAHRIM | S. HASHIM

Journal: Journal of Engineering Science and Technology
ISSN 1823-4690

Volume: 2;
Issue: 3;
Start page: 280;
Date: 2007;
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Keywords: Polyaniline | Nanocomposites | Radiation processing

ABSTRACT
A variables range of conducting polyaniline (PANI) nanocomposites hosted by polyvinyl alcohol (PVA) in a form of film has been prepared by using -irradiation technique to Aniline hydrochloride (AniHCl)/PVA composites. The conductivity of the film showed consequence increase following the radiation dose from 10 to 50 kGy for each different concentration of the monomer blend AniHCl in PVA matrix which have exponential relation. The maximum achieved dc conductivity (0) was 10-1 (S/m) at high concentration of AniHCl and 50 kGy radiation dose, as being studied by LCR-meter. The composite films structure has also been studied by Raman spectroscope, which reveals that there is a new chemical bond structure as imines group of the form C=N (polarons) species has been formed by radiation and giving rise to Raman shift at 1637 cm-1. The intensity of Polarons was also being increased exponentially following the radiation dose leading to increase of polyaniline conductivity. Moreover the morphological structure of the films were scanned by Scanning Electron Microscopy SEM, which intern reveals that the composite film is composed of polyaniline nanoparticles in the range size of 100 nm.
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