Water Dispersion Conductive Polypyrrole Based on Nanocrystalline Cellulose

Abstract

Conductive polypyrrole (PPY) was successfully synthesized via situ polymerization of pyrrole monomer in presence of nanocrystalline cellulose (NCC) suspension as a dopant and template with a rarity sedimentation. PPY-NCC composite having very good dispersion stability in aqueous media. The chemical structure of PPY and PPY-NCC was investigated by using Fourier transform infrared spectroscopy. FTIR result shows that the synthesis of PPY in presence of NCC still retains its chemical structures well. Scanning electron microscopy (SEM) analyses shows obvious transformation in PPY morphology from cauliflower-like spherical particles with 400-500 nm to nanofibers with 200nm length after composite with NCC. Transmission electron microscopy (TEM) revealed the typical morphology of NCC rod-like nanostructure with length 150 ±23 nm and diameter 6.5 ±0.68 nm and the NCC nanorod is coated by a cover of PPY with irregular thickness.