Conductivity, superhydrophobicity and mechanical properties of cotton fabric treated with polypyrrole by in-situ polymerization using the binary oxidants ammonium Peroxodisulfate and ferric chloride

Abstract

In this study, polypyrrole deposition and a superhydrophobic coating were applied to cotton fabrics to develop a self-cleaning and conductive fabric with electric heating performance. The binary oxidants ammonium peroxodisulfate and ferric chloride were introduced during the polymerization to adjust the size of the polypyrrole particles for creating diverse nano-scale roughness on the surface of the cotton fabrics and to prevent degradation in the mechanical properties of textiles. The in-situ polymerization of polypyrrole that introduced the binary oxidants succeeded in depositing polypyrrole particles on the surface of the cotton fabrics. Binary oxidants formed small polypyrrole particles contrary to the single oxidants. In terms of conductivity, the surface resistivity decreased as the FeCl3 ratio in the oxidants increased. The binary oxidants led to a similar level of conductivity even though the amount of polypyrrole deposition was less than that in the case of the single oxidant. The electrical heating performance improved as the surface resistance was decreased, resulting in an up to 20℃ increase in the surface temperature. On the other hand, the duration of the electro-heating effect was shorter with higher surface temperature. In terms of wettability, a superhydrophobicity with a contact angle of 150° or higher and a shedding angle of less than 10° was achieved under all oxidant conditions because of the nano-scale roughness caused by polypyrrole. Polypyrrole deposition reduced the tensile strength of the cotton fabric and increased its stiffness. The binary oxidants exhibited smaller changes in the mechanical properties of the textile than the single oxidants.

The Efficacy of Polymer Coatings for the Protection of Electroless Copper Plated Polyester Fabric

“…The consideration of Figure 3 indicates that, after application of polymers, the elongation at break and tensile strength were decreased moderately, compared to the reference sample, i.e., elongation at break by 3–11% (warp) and 0.04–16% (weft), and tensile strength by 3–18% (warp) and 7–22% (weft). This could be explained by the fact that the coating penetrates the fabric sample and inhibits the mobility of the yarns in the fabric structure, causing the fabric to become more rigid and inflexible [ 21 , 22 ]. The fabric rigidity depends also on the characteristics of the polymers used, the application conditions, and undesired linkages between the coated fibres, so-called bridges.…”

Layer-by-layer coating of MIL-100(Fe) on a cotton fabric for purification of water-soluble dyes by the combined effect of adsorption and photocatalytic degradation

“…This is because MIL-100(Fe) filled the space between the fibers, decreasing the mobility of the fibers. 24 The attached MIL-100(Fe) formed a layer on a fabric surface and fixed the MIL-100(Fe) and fibers; as a result, the yarns of MIL-100(Fe)@cotton were not loosened as much as those of cotton fabric, when immersed in dye solution for 60 h (L10 from Fig. 8(b) ).…”

Soft, flexible and self-healable supramolecular conducting polymer-based hydrogel electrodes for flexible supercapacitors

“…Here, the binary oxidant of FeCl 3 and APS was used for chemical polymerisation, as APS has a higher polymerisation rate but a low solubility in DMSO, while also Cl − from FeCl 3 could act as a dopant for the conducting polymer to enhance the conductivity. 23…”