Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Surface Treatment of Polypropylene using a Large Area Atmospheric Pressure Plasma-solution System

대면적 대기압 플라즈마-용액 시스템을 이용한 폴리프로필렌 표면 처리

  • Tran, Chinh Quoc (School of Applied Chemistry and Biological Engineering, Chungnam National University) ;
  • Choi, Ho-Suk (School of Applied Chemistry and Biological Engineering, Chungnam National University)
  • 트란꺽시 (충남대학교 바이오응용화학과) ;
  • 최호석 (충남대학교 바이오응용화학과)
  • Published : 2011.06.30
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Abstract

We investigated the possibility of introducing functional groups without damaging surface polymeric chains through the treatment of a polypropylene(PP) film immersed in liquid phase using an atmospheric pressure plasma with large area. The ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate: $[BMIM]^{+}[BF_{4}]^{-}$- was successfully applied for generating stable plasmas in the plasma-solution system. We successfully treated the film surface using the plasma-solution system and confirmed various oxygen-containing functional groups formed on the surface of PP film. The surface free energy of PP film was increased with increasing plasma treatment time and power. It also showed a maximum value at the PP sample treated in the ionic liquid solution of 1.5 M. ATR-FTIR analyses revealed the increase of various carbonyl groups(1,726 $cm^{-1}$, 1,643 $cm^{-1}$) and OH groups$(3,100{\sim}3,500\;cm^{-1})$ after plasma treatment of PP film, and XPS also supported the ATR-FTIR result.

대면적 대기압 플라즈마 반응 장비를 플라즈마-용액 시스템에 적용하여 액상 내부에 잠입된 폴리프로필렌(PP) 필름의 표면손상 없이 관능기 도입 가능성을 탐색하였다. 액상으로 1-butyl-3-methylimidazolium tetrafluoroborate: $[BMIM]^{+}[BF_{4}]^{-}$ 이온성 액체 수용액을 사용한 경우, 안정적으로 플라즈마를 발생시킬 수 있었다. PP 필름의 플라즈마 처리 결과, PP 표면에 다양한 산소 함유 관능기들이 도입되었음을 확인할 수 있었다. 플라즈마 처리 후 PP의 표면 자유에너지는 처리시간, 전압의 증가에 따라서 증가하며, 1.5M 이온성 액체 수용액 농도에서 가장 큰 값을 나타내었다. ATR-FTIR 분석 결과, 다양한 카르보닐 기(1,726 $cm^{-1}$, 1,643 $cm^{-1}$)와 하이드록시 기$(3,100{\sim}3,500\;cm^{-1})$의 흡광도가 증가하였고, XPS 분석은 ATR-FTIR 분석 결과를 뒷받침하여 주었다.

Keywords

References

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