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Photo-oxidation and Dyeability of Poly Ketone by UV/O3 Irradiation

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2013, 25(1), pp.25-29
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

Min Soo Kim 1,  장용준 1,  Jang, Jin-Ho 1

1금오공과대학교

Accredited

ABSTRACT

Poly ketone (PK) was photo-oxidized by UV/ozone irradiation and the effect of UV energy on the surface properties of the UV-irradiated PK film was investigated by the measurement of reflectance, surface roughness, contact angles, ESCA, and ATR. Reflectance, particularly at the wavelength of 380nm, decreased with increasing UV energy. And the irradiation produced nano-scale roughness on the surface uniformly. The maximum surface roughness increased from 25.3nm for the unirradiated sample to 104.9nm at the irradiation of 42.4J/cm². The improvement in hydrophilicity was caused by the introduction of polar groups such as C-O and C=O bonds resulting in higher O1s/C1s. The surface energy of PK film increased from 43.3 mJ/m² for the unirradiated sample to 71.9 mJ/m² at the irradiation of 31.8J/cm². The zeta potential of the UV-irradiated PK decreased with increased UV energy and the dyeability to cationic dyes increased accordingly, resulting from the photochemically introduced anionic and dipolar dyeing sites on the PK films surfaces.

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This paper was written with support from the National Research Foundation of Korea.
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