In situ coupled electrical/mechanical investigations of graphene coated cationized cotton yarns with enhanced conductivity upon mechanical stretching. Issue 40 (28th September 2021)

• Record Type: Journal Article
• Authors: Maneval, Léa; Atawa, Bienvenu; Serghei, Anatoli; Sintes-Zydowicz, Nathalie; Beyou, Emmanuel
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 40(2021)
• Page Start: 14247
• Page End: 14255
• Publication Date: 2021-09-28
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc03055h
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Pre-stretching is an efficient treatment to irreversibly and permanently enhance the conductivity of graphene coated yarns. Abstract : In situ coupled mechanical/electrical investigations on graphene coated cationized cotton yarns have been carried out upon cyclic loading, with simultaneous measurements of stress, strain and electrical conductivity. The conductive cotton yarns have been prepared by employing a dip-coating procedure in an aqueous graphene suspension following a cationization process applied to enhance the electrostatic interactions. An increase in the conductivity of the graphene coated yarns by up to four decades is reported upon mechanical stretching, leading to conductivity values as high as 1.1 S cm −1 . Furthermore, we demonstrate that this enhancement effect is permanent and leads to reversible conductivity/stress curves after the first mechanical stretching. Our study opens thus new perspectives in the development of textile yarns with enhanced conductivity, with possible applications in the field of smart textile materials.