Investigation of Dc-Conductivity and Morphology of PMMA/PANI Composite

Panigrahi M.K

doi:10.34256/irjmt2128

Abstract

Various inorganic acid doped PMMA/PANI composite are prepared by in-situ polymerization technique. Morphology, room temperature (RT) conductivity and DC-conductivity with temperature variation (77-300 K) are analyzed by scanning electron microscopy (SEM) and linear four probe technique, respectively. Fibril structures with different diameter are observed in doped PMMA/PANI composite, whereas smooth texture is found in PMMA polymer film. Room temperature DC conductivity is found 0.1497 × 10-2 S/cm for H2SO4-and 0.309 × 10-3 S/cm for H3PO4-, 0.244 × 10-3S/cm for HCl-doped conductive composite, respectively. Temperature dependent DC Conductivity is measured and it behaves like semiconductor.

Highlights

It is well known that intrinsic conducting polymers (ICPs) have considered much more scientific community interest over the last few years due to potential commercial applications in different fields such as electrochromic devices, light emitting diodes supercapacitors, rechargeable batteries, sensors, corrosion inhibitors and artificial muscles [1,2,3,4,5,6,7]
Various inorganic acid doped PMMA/PANI composite are prepared by in-situ polymerization technique
Fibril structures with different diameter are observed in doped PMMA/PANI composite, whereas smooth texture is found in PMMA polymer film

Summary

Introduction

It is well known that intrinsic conducting polymers (ICPs) have considered much more scientific community interest over the last few years due to potential commercial applications in different fields such as electrochromic devices, light emitting diodes supercapacitors, rechargeable batteries, sensors, corrosion inhibitors and artificial muscles [1,2,3,4,5,6,7]. Polyaniline (PANI) is a member of ICPs family It has both good thermal and environmental stability coupled with easy processable and doping-dedoping mechanism [8]. PANI can be made more processable in the composite form with electroactive polymer which is act as stabilizer [9]. PMMA/PANI composite doped with different inorganic acid i.e., HCl, H2SO4 and H3PO4 are prepared by oxidation-polymerization process using aniline, PMMA film, ammonium persulphate (APS) with appropriate amounts of water as precursors. During the preparation of monomer solution, 105 ml of 1 (M) H2SO4 solution with 3 mL of aniline is taken and square sized PMMA films are dipped into the solution. For comparison study, doped-H3PO4 PMMA/PANI composite are prepared under similar conditions

Characterization Techniques

Conclusions