Peroxydisulfate initiated graft copolymerization of aniline onto poly(propylene) fiber—A kinetic approach

Abstract

A novel method for the preparation of electrically conducting fibers through chemical grafting of electrically conducting polymer onto poly(propylene) (PP) fiber is described. The graft copolymerization of aniline (ANI) was performed in aqueous acidic medium by using a chemical oxidant such as peroxydisulfate (PDS). Grafting occurred with simultaneous homopolymer formation. The content of polyaniline in the backbone fiber was found to vary by varying [monomer], [initiator], and amount of PP fiber. Various graft parameters such as rate of grafting (R g ), % grafting, and % grafting efficiency were evaluated. The rate of homopolymerization (R h ) was also determined. Both R h and R g showed first-order dependency on [ANI], [PDS], and amount of PP fiber variation. The chemical grafting was confirmed by use of cyclic voltammetry and conductivity measurements.

Morphology, thermal, and mechanical properties of polypropylene/polyaniline coated short glass fiber composites

“…Since the work done by Gregory et al,18 the surface modification of a wide range of fibers with PAn has been extensively studied 19–22. Geetha et al23 studied different sulfonic acid in the surface modification of glass fibers by in situ chemical polymerization.…”

Synthesis and characterization of biopolymer‐based electrical conducting graft copolymers

“…The surface DC electrical conductivity of the GG, PANI, and GG‐ graft ‐PANI rectangular pressed pellets (pressure 6 tons/cm 2 ) was measured by Keithley four‐probe method 20. The electrical conductivity (σ) was calculated using the following equations: where ρ, R , A , l , and σ are resistivity (Ω cm), resistance (Ω), area of the pallet (cm 2 ), length of the pallet (cm), and conductivity (S/cm), respectively.…”