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Journal of Applied Sciences

Year: 2006 | Volume: 6 | Issue: 6 | Page No.: 1287-1291
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Authors

M.Z.A. Yahya

A.M.M. Ali

M.F. Mohammat

M.A.K.M. Hanafiah

M. Mustaffa

S.C. Ibrahim

Z.M. Darus

M.K. Harun

Keywords

In this study, chitosan was used as the host with lithium acetate (LiOAc) as the doping salt and Palmitic Acid (PA) and Oleic Acid (OA) as plasticizers. The highest conducting film containing salt has composition 55 wt. % CA and 45 wt. % LiOAc. Complexation between chitosan and the salt can be proven by Fourier Transform Infrared (FTIR) method. The NH2 and O = C-NHR vibrations which can be observed at 1580 and 1655 cm-1 shift to lower wavenumbers when the complexes are formed. In this study, other than the salt, plasticizers are also added to the polymer with the aim of enhancing the electrical conductivity of the polymer, the mixing of these three components could lead to some interactions for the formation of the polymer electrolyte with its own unique properties. Hence, apart from justifying the occurrence of complexation, it is also essential to know the possible interactions between the salt and plasticizer, the plasticizer and the polymer and within the polymer-salt-plasticizer system. With such knowledge, a model of the polymer-salt and plasticizer system could be devised which might be able to explain the electrolytic property of the sample, in particular, the ion conducting mechanism.
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