Electromechanical properties of polyamide/lycra fabric treated with PEDOT:PSS

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Tadesse, M.G.^1,2,3 ; Mengistie, D.A.^4 ; Loghin, C.^2 ; Chen, Y.^3 ; Wang, L.^3 ; Catalin, D.^5 ; Müller, C.^4 ; Nierstrasz, V.^1

Textile Materials Technology, Department of Textile Technology, Swedish School of Textiles, Faculty of Textiles, Engineering and Business, University of Borås, Borås

501 90, Sweden^1

Faculties of Textiles, Leather and Industrial Management, Gheorghe Asachi Technical University of Iasi, D.Mangeron Blv., 53, Iasi

700050, Romania^2

College of Textile and Clothing Engineering, Soochow University, 178 Gan Jiang Dong Road, Suzhou

215021, China^3

Departments of Chemistry and Chemical Engineering, Chalmers University of Technology, Goteborg

412 96, Sweden^4

Faculty of Machine Manufacturing and Industrial Management, Gheorghe Asachi Technical University of Iasi 53, D.Mangeron Blv., Iasi

700050, Romania^5

关键词: Electromechanical property;    Immersion;    Multi-functional materials;    PEDOT:PSS;    Polyurethane dispersions;    Stretchable conductive fabrics;    Surface resistance measurements;    Water-based polyurethane;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/7/072025/pdf
DOI  :  10.1088/1757-899X/254/7/072025

来源: IOP

【 摘 要 】

One of the challenges in smart textiles is to develop suitable multifunctional materials that can address simultaneously several characteristics such as durability, stretchability, lightweight, and conductivity. Conductive polymers which showed success in different technological fields like polymer solar cells and light emitting diodes are promising in many smart textile applications. In this work, we treated a common polyamide/lycra knitted fabric with PEDOT:PSS for stretchable e-textiles. PEDOT:PSS, with DMSO as a conductivity enhancer and different ratios of water-based polyurethane dispersions as a binder, was applied to the fabric with simple immersion and coating applications. The effect of different application methods and binder ratio on the surface resistance of the fabric was monitored with four point probe electrical surface resistance measurement systems. Samples prepared by immersion technique are more uniform and have higher conductivity than those prepared by a coating technique. SEM images showed that PEDOT:PSS is incorporated into the structure in the immersion method while in the coating it is majorly present on the surface of the fabric. The tensile measurement showed that the acidic PEDOT:PSS and polyurethane dispersion coating has no adverse effect on the tensile strength of the fabric. The coated samples can be stretched up to 700% while still reasonably conductive. The resistance increases only by a small amount when samples were stretched cyclically by stretching 100%. Generally, samples prepared by the immersion method maintained better conductivity while stretching than those by a coating method. The washing fastness of the samples was also assessed.