Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Nano $TiO_2$ Coating of PET Fabrics by Sol-Gel Processing

졸겔법에 의한 PET 직물의 $TiO_2$ 나노 코팅

  • Jang, Jin-Ho (Department of Nano-Bio Textile Engineering, Kumoh National Institute of Technology) ;
  • Son, Jung-A (Woongjin Chemical Co., Ltd.)
  • 장진호 (금오공과대학교 나노바이오텍스타일공학과) ;
  • 손정아 (웅진케미칼㈜)
  • Published : 2008.08.30
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Abstract

The photografted PET fabrics with MAPTMS immersed in aqueous titanium (IV) isopropoxide (TTIP) solution was gelled under acidic condition via hydrolysis and condensation reactions, which produce a nano coating of TiO_2$ on the PET fabrics less than a diameter of 200nm. With increase in gellation time, nano $TiO_2$-coated fabrics showed decreased reflectance at the visible region particularly at 440 nm. Also $TiO_2$-containing fabrics became more susceptible to thermal degradation above $470^{\circ}C$. The PET fabrics containing $TiO_2$ nanoparticles showed better photocatalytic properties such as the photobleaching of methylene blue and ammonia deodorization in comparison with the untreated and grafted PET fabrics. The UV-induced degradation occurred during photobleaching of methylene blue solution, which was more pronounced in the ases of grafted and nano-coated samples.

Keywords

References

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