Abstract
In this work, we have successfully produced a conductive and stretchable knitted cotton fabric by screen printing of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and poly(dimethylsiloxane-b-ethylene oxide)(PDMS-b-PEO) conductive polymer composite. It was observed that the mechanical and electrical properties highly depend on the proportion of the polymers, which opens a new window to produce PEDOT:PSS-based conductive fabric with distinctive properties for different application areas. The bending length analysis proved that the flexural rigidity was lower with higher PDMS-b-PEO to PEDOT:PSS ratio while tensile strength was increased. The SEM test showed that the smoothness of the fabric was better when PDMS-b-PEO is added compared to PEDOT:PSS alone. Fabrics with electrical resistance from 24.8 to 90.8 kΩ/sq have been obtained by varying the PDMS-b-PEO to PEDOT:PSS ratio. Moreover, the resistance increased with extension and washing. However, the change in surface resistance drops linearly at higher PDMS-b-PEO to PEDOT:PSS ratio. The conductive fabrics were used to construct textile-based strain, moisture and biopotential sensors depending upon their respective surface resistance.
Highlights
Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) conductive polymer is well-known for its high conductivity and applications in conductive synthetic textiles
Graphene oxide (GO) as an efficient alternative structure for indium tin oxide (ITO) in organic photovoltaics [1], ITO-PEDOT:PSS/poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester/Al [2], poly (PVA)–PEDOT:PSS blend filled with synthesized graphene oxide (GO) and reduced GO by solvent casting technique [3], PEDOT:PSS@polyurethane nonwovens by electrospinning and dip-coating [4], super paramagnetic PEDOT/magnetite nano particles [5], GO/glucose/PEDOT:PSS super capacitor [6], graphene and poly(3,4-ethylenedioxy thiophene)–poly(styrenesulfonate) (G-PEDOT:PSS) [7] an electroactive bacterium, Shewanellaoneidensis MR-1, inside a conductive three-dimensional
The bending length of the PEDOT:PSS-treated fabric decreased on an average by 11% when r was 50% and the flexural rigidity reduced by 13%
Summary
Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) conductive polymer is well-known for its high conductivity and applications in conductive synthetic textiles. It has been used with encouraging results as electrodes for flexible electronics. As a result many researchers have been trying preparing PEDOT:PSS-based conductive polymer composites. On the the other flexible andand biocompatible conductive polymer composites are required. It was noticed thatworks the common limitations thepossess conductive polymer composite-based textiles reported in many of the literature are thatofthey inadequate flexibility, stretchability, conductive textiles reported in many works of the literature are that they possess inadequate and biocompatibility. 1000 (Figure 1a) and PDMS-b-PEO (Figure 1b) conductive polymer composite-based fabric.
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