Effect of synthesis parameters on the electrical conductivity of polypyrrole‐coated poly(ethylene terephthalate) fabrics

Abstract

The effects of pyrrole, anthraquinone-2-sulphonic acid (AQSA) and iron(III) chloride (FeCl 3 ) concentrations, reaction time and temperature on the electrical conductivity of polypyrrole (PPy)-coated poly(ethylene terephthalate) (PET) fabrics were investigated. With an increase in both the AQSA and FeCl 3 concentrations, resistivity decreased to a point beyond which higher concentrations led to increased surface resistivity. Erosion of the polymer coating, in dynamic synthesis from continual abrasion, manifested as an exponential increase in the resistance of the coated textile substrate. This was not encountered in static synthesis conditions. Temperature affected the degree of surface and bulk polymerisation. The effect of polymerisation temperature on conductivity was negligible. Conductive polymer coating on textiles through chemical polymerisation enabled a smooth coherent film to encase individual fibres, which did not affect the tactile properties of the host substrate. The optimum FeCl 3 /pyrrole and AQSA FeCl 3 /pyrrole molar ratios were found to be 2.22 and 0.40 respectively.

Enhanced electrocapacitive performance and high power density of polypyrrole/graphene oxide nanocomposites prepared at reduced temperature

“…Such an increase in the peak current was more pronounced for PNCs prepared at 10 ± 1°C over those prepared at 30 ± 1°C [13][14][15][16][17][18][19] (Fig. 7a).…”

“…The treated substrate was dried at room temperature for 2 h and then at 100°C/400 mmHg for 48 h. This afforded cathodes with a mass thickness of electroactive materials by 5 ± 1 mg over the 316-SS substrate [25]. low temperature liberates PPY nanoparticles [12] with improved specific and electrochemical conductivities [13][14][15][16][17][18][19].…”

Investigation of Polypyrrole Coated Cotton Fabrics as Electromagnetic Shielding Material

“…Furthermore, the excess Fe ions cause over-oxidation of the yarn that leads the formation of carbonyl defects on the PPy backbone. Carbonyl defects cause interruptions on the ϖ conjugation and act as electron withdrawing groups, inhibiting charge transfer, resulting decline in conductivity [8][9][10]. Table 2 shows the shielding effectiveness (SE), absorption (A), reflection (R) and transmission (T) values of the PPy deposited cotton fabrics with various surfactant concentrations.…”

Applications of Polypyrrole/Polyester Textiles: A Review

“…In particular, [46] is pointing out the role of the concentrations of the chemicals used in the polymerisation and of temperature and time in the final result. In [46], for instance, it is shown that the rate of polymerisation is strongly affected by the temperature of the synthesis.…”

“…Effects of synthesis parameters and substrate treatments Actually, several publications in the area of conductive polymer coated textiles exist [46][47][48][49][50][51], which had investigated the resulting polymer conductivity. In particular, [46] is pointing out the role of the concentrations of the chemicals used in the polymerisation and of temperature and time in the final result.…”