Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Analysis of Thickness-dependent Hydrophilicity of Cotton Yarn via Contact Angle Measurement and Production and Performance Comparison of Water-dispersed SWCNT-impregnated Resistive Sensor

접촉각 측정을 통한 면사 굵기별 Hydrophilicity 분석과 수분산 SWCNT 함침 Resistive Sensor 제작 및 성능 비교

  • Jiwoo, Kang (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Sangun, Kim (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Jooyong, Kim (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 강지우 (숭실대학교 유기신소재파이버공학과) ;
  • 김상운 (숭실대학교 유기신소재파이버공학과) ;
  • 김주용 (숭실대학교 유기신소재파이버공학과)
  • Received : 2022.10.20
  • Accepted : 2022.11.21
  • Published : 2022.12.31
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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.

Keywords

Acknowledgement

이 논문은 2022년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2019R1A2C2005933).

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