Analysis of Thickness-dependent Hydrophilicity of Cotton Yarn via Contact Angle Measurement and Production and Performance Comparison of Water-dispersed SWCNT-impregnated Resistive Sensor 


Vol. 59,  No. 6, pp. 293-298, Dec.  2022
10.12772/TSE.2022.59.293


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  Abstract

This study aims to determine a conductive fabric suitable for wearable smart devices. The effect of the introduction of conductive particles on the fabric characteristics based on yarn thickness was compared and analyzed. The surface structure of cotton fabrics made of 20 s, 30 s, and 40 s, was observed under a microscope at 400x magnification, and their contact angles were measured. To provide conductivity, the fabric was dipcoated with water-dispersed SWCNTs, and its average line and sheet resistance were measured. The ratio of the apparent area occupied by the yarn increased as the yarn became thinner, and the contact angle were largest and smallest for Fabrics B and C, respectively. Accordingly, the surface properties were confirmed to be determined not only by the component and thickness of the yarn, but also by the microstructure and energy of the fabric surface and the size and spacing of irregularities. Upon measuring the resistance, Fabrics B and A were confirmed to have the highest and lowest resistance, respectively. Therefore, we propose a method of fabric selection by conducting such experiments before conductive fabric manufacturing.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)