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Effect of aniline concentration on chitosan grafted polyaniline

S. RAMANATHAN1,* , V. PONNUSWAMY1, B. GOWTHAM1, K. PREMNAZEER2, S. C. MURUGAVEL3

Affiliation

  1. PG and Research Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore-641020, India
  2. PG and Research Department of Physics, Islamiah College of Arts and Science, Vaniyambadi-635752, India
  3. Chemistry Division, Department of Basic Sciences, PSG College of Technology, Coimbatore- 641004, India

Abstract

Graft copolymerization of polyaniline onto chitosan using ammonium persulphate (APS) as an initiator was carriedout to obtain a product called chitosan grafted polyaniline (chit-g-PANI). Chit-g-PANI samples were synthesized by varying aniline concentration. The structural, thermal and electrical properties of the chit-g-PANI were characterized by measuring UV-Vis, FT-IR, XRD, TGA techniques and DC conductivity measurements, taking chitosan as reference. The chit-g-PANI products have a lower thermal stability than chitosan as revealed by TGA analysis. X-Ray diffraction curves show changes in crystallinity pattern. Spectroscopic analysis suggested a grafting mechanism that proceeds via oxidation and chain scission of chitosan. The DC conductivity is measured in the temperature range of 300-370K and is found to increase with temperature..

Keywords

Conducting Polymer, Chitosan, Grafting, Polyaniline, DC conductivity.

Submitted at: March 24, 2013
Accepted at: July 10, 2014

Citation

S. RAMANATHAN, V. PONNUSWAMY, B. GOWTHAM, K. PREMNAZEER, S. C. MURUGAVEL, Effect of aniline concentration on chitosan grafted polyaniline, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 7-8, pp. 973-977 (2014)