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Coloured conducting textiles have shown a wide range of potential
applications in heating fabrics, electromagnetic wave absorption,
and wearable optoelectronic devices. This research aimed at
clarifying some issues occurred in the research project on coloured
conductive textiles. The investigation firstly clarified a possible
chemical reaction that took place between a commercial dispersing
dye (Terasil Red G) and the conducting polymer polypyrrole, through
chemical separation, structural identification and spectrum
characterisations. Then, a series of acidic dyes were introduced
into polypyrrole matrix during the vapour coating of conducting
polymer on the wool fabrics. Colour and thermal stability studies
were conducted. Finally, the polypyrrole nanoparticles (particle
size several 200nm) were prepared by a microemulsion polymerisation
technique. An acid dye was used as the dopant to re-dope the
nanoparticles. The effect of the acidic dye on the optical
absorption of nanoparticles was studied. Applying the conducting
nanoparticles on wool fabrics may open an alternative path to
achieve the coloured conducting textiles.
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