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A Study on the Super-hydrophobicity of Poly(ethylene terephthalate)Fabric by TiO2 Nano-particles Coating

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2009, 21(1), pp.30-37
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

박성민 1 권일준 1 Ji-Yeon Kim 1 Namsik Yoon 2 Jeong Hyun Yeum 2 hang-Nam Kim 1

1한국염색기술연구소
2경북대학교

Accredited

ABSTRACT

Abstract― Studies on plants such as lotus leaf suggested that dual-scale structure could contribute to super-hydrophobicity. We introduced super-hydrophobicity onto poly(ethylene terephthalate)(PET) fabric with dual-scale structure by assembling TiO2 nano sol. PET fabric was treated with TiO2 sol, water-repellent agent using various parameters such as particle size, concentration. Morphological changes by particle size were observed using field emmission scanning electron microscopy(FE-SEM) and AFM measurement, contact angle measurement equipment. The contact angle of water was about 138.5°, 125.8°, 125.5° and 108.9° for PET fabric coated with 60.2nm, 120.1nm, 200nm and 410.5nm TiO2 particles, compared with about 111.5° for PET fabric coated with water repellent. When we mixed particle sizes of 60.2nm and 120.1nm by 7:3 volume ratio, the contact angle of water was about 132.5°. And we mixed particle sizes of 60.2nm and 200nm by 7:3 volume ratio, the contact angle of water was about 141.8°. Also we mixed particle sizes of 60.2nm and 410.5nm by 7:3 volume ratio, the best super-hydrophobicity was obtained. In this paper, we fabricated various surface structures to the water-repellent surfaces by using four types of TiO2 nano-particles, and we found that the nanoscale structure was very important for the super-hydrophobicity.

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