Conductive Electrospun Polyaniline/Polyvinylpyrrolidone Nanofibers: Electrical and Morphological Characterization of New Yarns for Electronic Textiles

Abstract

Advanced functionalities textiles embedding electronic fibers, yarns and fabrics are a demand for innovative smart cloths. Conductive electrospun membranes and yarns based on polyaniline/polyvinylpyrrolidone (PANI/PVP) were investigated using the chemical modification of PANI instead of using conventional coating processes as in-situ polymerization. PANI was synthesized from the aniline monomer and the influence of the oxidant-to-monomer ratio on electrical conductivity was studied. The optimized conductivity of pellets made with pressed PANI powders was 21 S·cm−1. Yarns were then prepared from the t-Boc-PANI/PVP electrospun membranes followed by PANI protonation to enhance their electrical properties. Using this methodology, electrospun membranes and yarns were produced with electrical conductivities of 1.7 × 10−2 and 4.1 × 10−4 S·cm−1.

Preparation of Anionic Surfactant-Based One-Dimensional Nanostructured Polyaniline Fibers for Hydrogen Storage Applications

“…Conductivity is almost constant up to 3Hz beyond which it gradually increases, and, finally, after 4 Hz, conductivity jumps exponentially, which is also the characteristic peak of disordered semiconductor materials. It is observed that the polyaniline fiber has a higher conductivity of 1.23 S/cm compared to the bulk polyaniline [ 45 , 46 , 47 ].…”

Electronic Textiles

“…Besides PEDOT:PSS, other conductive polymers can be used to prepare conductive coatings or intrinsically conductive fibers. Typical other materials are polyaniline (PAni) [34,35] and polypyrrole (PPy) [36].…”

Polyaniline/polyvinylpyrrolidone nanofibers via nozzle‐free electrospinning

“…4 Polymer electrospun fibers have unique properties due to their high surface-to-volume ratio, fiber-length-todiameter aspect ratio, 5 and porosity (generally ≥70%). 6 Nanofibers can be used for diverse applications such as filtration, 7 electronic textiles, 8,9 drug delivery, 5 tissue engineering, [10][11][12] wound dressing, 13 sensors, 14,15 and composites. 16 The electrospinning process stimulates the electrified liquid jets to whip and elongate to form fine fibers.…”

“…49 Doped PANI usage in polymer blend solutions has been reported extensively in the literature. 8,14,21,26,35,37,42,46,[50][51][52][53] Much of the current literature presents varying results on the electrospun materials' enhanced electrical conductivity based on the doped PANI. There are several disadvantages associated with the use of doped PANI as compared to using pure PANI.…”