Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Photo-oxidation of Poly(butylene adipate-co-terephthalate) Film Using UV/Ozone Irradiation

자외선/오존 조사에 의한 Poly(butylene adipate-co-terephthalate) 필름의 광산화

  • Lee, Duck-Hoon (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Kim, Yeon-Woo (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Jung, Jin-Young (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Yoo, Min-Hyung (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Jang, Jinho (Department of Materials Design Engineering, Kumoh National Institute of Technology)
  • 이덕훈 (금오공과대학교 소재디자인공학전공) ;
  • 김연우 (금오공과대학교 소재디자인공학전공) ;
  • 정진영 (금오공과대학교 소재디자인공학전공) ;
  • 유민형 (금오공과대학교 소재디자인공학전공) ;
  • 장진호 (금오공과대학교 소재디자인공학전공)
  • Received : 2019.07.09
  • Accepted : 2019.08.17
  • Published : 2019.08.31
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Abstract

Biodegradable poly(butylene adipate-co-terephthalate) (PBAT) film was modified by UV/ozone irradiation. The surface properties of the irradiated PBAT were characterized by surface roughness, contact angles, ESCA, and ATR analyses. The UV/ozone treatment uniformly roughened the film surface, where the maximum surface roughness of the unirradiated sample increased from 74 nm to 239 nm with UV energy of $15.9J/cm^2$. The modified PBAT became more hydrophilic as indicated by lower water contact angles of $10^{\circ}$ compared to the $72^{\circ}$ of the unirradiated PBAT. In addition, surface energy increased from $44.8mJ/m^2$ for the unirradiated PBAT to $50.1mJ/m^2$ with a larger UV energy of up to $15.9J/cm^2$. In addition, the improvement in hydrophilicity was caused by the introduction of polar groups containing oxygen bonds such as C-O and C=O resulting in higher O1s/C1s, which in turn resulted in a higher dyeability of the modified film to a cationic dye. The increased dyeability may have resulted from the photochemically introduced anionic and dipolar dyeing sites on the photo-oxidized PBAT surface.

Keywords

References

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