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Surface Photooxidation of Poly(butylene terephthalate) Films by UV/Ozone Irradiation
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  • Journal title : Textile Coloration and Finishing
  • Volume 28, Issue 2,  2016, pp.63-69
  • Publisher : The Korean Society of Dyers and Finishers
  • DOI : 10.5764/TCF.2016.28.2.63
 Title & Authors
Surface Photooxidation of Poly(butylene terephthalate) Films by UV/Ozone Irradiation
Joo, Jin-Woo; Jang, Jinho;
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Poly(butylene terephthalate)(PBT) surface was modified by UV/ozone irradiation and the effect of UV energy on the surface properties of the irradiated PBT films were characterized by the reflectance, surface roughness, contact angles, ESCA, and ATR analyses of the film surface. The surface reflectance, at the short wavelength of visible spectrum of particularly 400nm, decreased with increasing UV energy. And the irradiation roughened the film surface uniformly in the nano scale. The maximum surface roughness increased from 110nm for the unirradiated sample to 303nm at the UV energy of . The surface energy of PBT film increased from for the unirradiated PBT to at the irradiation of . The improvement in hydrophilicity was caused by the introduction of polar groups containing oxygens such as C-O and C=O bonds resulting in higher . The increased dyeability of the modified film to cationic dyes may be resulted from the photochemically introduced anionic and dipolar dyeing sites on the PBT films surfaces.
Poly(butylene terephthalate);UV irradiation;hydrophilicity;dyeability;cationic dye;
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