Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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A Study on Imparting Water Repellency to Recycled PET Nonwoven Fabrics Using Silica Sol and Silane Coupling Agent

리싸이클 PET 부직포의 실리카졸과 실란 커플링제를 이용한 발수성 부여 연구

  • Sun Young Lee (Research Institute for Applied Chemistry and Biological Engineering, Chungnam National University) ;
  • Jae Min Lee (Department of Organic Applied Materials Engineering, Chungnam National University) ;
  • Jinwon Park (Department of Organic Applied Materials Engineering, Chungnam National University) ;
  • JeongJin Park (Department of Organic Applied Materials Engineering, Chungnam National University) ;
  • MiYeon Kwon (Material & Component Convergence R&D Department, Korea Institute of Industrial Technology) ;
  • Youl Huh (Department of Bio-Applied Chemistry, Graduate School of Industry, Chungnam National University) ;
  • Seung Goo Lee (Department of Organic Applied Materials Engineering, Chungnam National University)
  • 이선영 (충남대학교 바이오응용화학연구소) ;
  • 이재민 (충남대학교 유기재료공학과) ;
  • 박진원 (충남대학교 유기재료공학과) ;
  • 박정진 (충남대학교 유기재료공학과) ;
  • 권미연 (한국생산기술연구원 소재부품융합연구부문) ;
  • 허율 (충남대학교 산업대학원 바이오응용화학과) ;
  • 이승구 (충남대학교 유기재료공학과)
  • Received : 2023.01.18
  • Accepted : 2023.02.23
  • Published : 2023.02.28
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Abstract

In this study, silica sol and silane coupling agent hexadecyl trimethoxysilane (HDTMS) were used to improve the surface roughness of the recycled PET nonwoven fabrics to impart water repellency of the nonwoven fabrics. The effects of silica sol and silane coupling agent treatment on the surface morphology, chemical structure, surface roughness and water repellency of the recycled PET nonwoven fabrics were examined. As results of SEM observation, the silica particles showed a uniform distribution on the surface at low concentration of silane coupling agent, and with an increase of concentration of silane coupling agent, more agglomeration of the particles occurred. FT-IR results showed the specific peaks at 3,000, 1,000 and 791 cm-1 due to the axial deformation of Si-OH, Si-O-Si and Si-C bond, respectively. Surface roughness of recycled PET nonwoven fabrics increased by treatment with silica sol and silane coupling agent. It is thought to be because silica nano particles generated the micro irregularities on the surface. The water contact angle was greatly increased to 130° at 0.5% of silane coupling agent. It is thought to be due to reduction of surface free energy of the nonwoven fabrics by treatment with silica sol and silane coupling agent. It was confirmed that silica sol and silane coupling agent treatment is an eco-friendly surface modification method that can improve water repellency of nonwoven fabrics efficiently.

Keywords

Acknowledgement

본 연구는 산업통상자원부 소재부품기술개발사업(과제번호: 20009947) 지원으로 수행된 연구이며, 이에 감사드립니다.

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