DOI QR코드

DOI QR Code

Sur face Modification of Ultra High Molecular Weight Polyethylene Films by UV/ozone Ir radiation

  • Yun, Deuk-Won (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology) ;
  • Jang, Jin-Ho (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
  • 투고 : 2011.05.12
  • 심사 : 2011.06.22
  • 발행 : 2011.06.27

초록

Ultra High molecular weight polyethylene(UHMWPE) films were photooxidized by UV/ozone irradiation. Reflectance of the irradiated films decreased in the low wavelength regions of visible light, indicating destructive interference of visible light due to roughened surface. The UV treatment developed the nano-scale roughness on the UHMWPE films surface, which increased by two-fold from 82.6 to 156.6nm in terms of peak-valley roughness. The UV irradiation caused the oxygen content of the UHMWPE film surface to increase. Water contact angle decreased from $83.2^{\circ}$ to $72.9^{\circ}$ and surface energy increased from 37.8 to 42.6mJ/$m^2$ with increasing UV energy. The surface energy change was attributed to significant contribution of polar component rather than nonpolar component indicating surface photooxidation of UHMWPE films. The increased dyeability to cationic dyes may be due to the photochemically introduced anionic and dipolar dyeing sites on the film surfaces.

키워드

참고문헌

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