ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis, characterisation, and DC conductivity of polyaniline-lead oxide composites

Ameena Parveen, Raghunandan Dashpande, Shakeel Ahmed, and Aashis S. Roy

Department of Physics, Government First Grade College, Gurmitkal, Yadgir, 585214, Karnataka, India

E-mail: aashis_roy@rediffmail.com

Abstract: The polyaniline-PbO composites of various mass fractions were prepared by in situ polymerisation. The prepared samples were characterised by FTIR, and the dominant peaks confirmed the formation of polyaniline-PbO composites. The SEM study shows a granular agglomerated morphology, and increases with an increase in the lead oxide mass % in polyaniline. Direct current (DC) conductivity (σ _DC) was studied as a function of temperature (T). From these studies, it was found that conductivity increased at higher temperatures due to the polarons hopping from one localised state to another. DSC studies reveal, the decrease in peak temperature from 273°C (pure PANI) to 169.2°C, 193.5°C, 218.4°C, 235.2°C, and 224.2°C, respectively for the various mass fractions (10 %, 30 %, 20 %, 40 %, and 50 %) of polyaniline-PbO composites.

Keywords: polyaniline – lead oxide – DC conductivity – DSC – SEM

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-012-0270-z

Chemical Papers 67 (3) 350–356 (2013)