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.
Highlights
Electronic textiles have attracted massive attention in the past decade due to their potential applications in wearable electronics and portable devices [1], such as healthcare detectors [2,3], portable power [4], and work and military uniforms [5,6]
Instead of conventional coating processes through in-situ polymerization of electrospun fibers, we propose the electrospinning of chemically modified PANI
Aniline (99.5% purity) and ammonium persulfate (98% purity) were purchased from Sigma-Aldrich (Gillingham, UK); Hydrochloric acid (HCl, 37%) and methanol (99.8% purity) were provided by Honeywell (Charlotte, NC, USA); Chloroform and n-Hexane were purchased from Carlo Erba Reagents (Chaussée du Vexin, France); 4-(dimethylamino)pyridine was purchased from FluoroChem (Derbyshire, UK); 1-Methyl-2-pyrrolidinone (99% purity) and di-tert-butyl decarbonate (97% purity) were provided by Alfa Aesar (Heysham, UK); N,N-dimethylformamide, DMF, from Carlo Erba Reagents (Chaussée du Vexin, France); and Polyvinylpyrrolidone, Mw 1.300.000 Da, was provided by Sigma-Aldrich (Gillingham, UK)
Summary
Electronic textiles have attracted massive attention in the past decade due to their potential applications in wearable electronics and portable devices [1], such as healthcare detectors [2,3], portable power [4], and work and military uniforms [5,6]. Polyanilines belong to a class of intrinsically conductive polymers (ICPs) which polymeric structure consisting of alternating reduced amine and oxidized imine repeat units [8,9]. ICPs, polyaniline (PANI) presents significant advantages such as the ease of synthesis [10,11], good environmentally stability [12], low cost of aniline monomer, high yield of the polymerization product, and applicability in a wide range of applications [13]. The preparation of pristine PANI conductive fibers or fabrics through conventional spinning methods is still a challenge. Fabrics coating by in-situ polymerization [14,15] and fibers spinning using conventional polymers as carriers are the most common methodologies used to produce fibers with reported conductivities between 10−5 and 10−1 S·cm−1
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
