Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Analysis of Multi-layered Thin Film Using ATR FT-IR and pyro-GC/MS

ATR FT-IR과 pyro-GC/MS를 이용한 다층박막필름의 분석

  • Park, Sung Il (Department of Chemical Engineering, Dongguk University) ;
  • Lee, Jung-Hyun (Hyundai Automotive R&D Division, Material & Analysis Team) ;
  • Lee, Myung Cheon (Department of Chemical Engineering, Dongguk University)
  • 박성일 (동국대학교 화학공학과) ;
  • 이정현 (현대자동차연구소 재료분석팀) ;
  • 이명천 (동국대학교 화학공학과)
  • Received : 2019.09.04
  • Accepted : 2019.09.20
  • Published : 2019.09.30
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Abstract

The material constitution of multi-layered thin film coated on the PET base film was analyzed using ATR FT-IR and pyro GC/MS combination. The cross section of the film was acquired by cracking the film after dipping in liquid nitrogen and was observed using optical microscope. Total thickness of the coated film was $70{\mu}m$ and three layers were observed. Since each layers were too thin to analyze directly except the surface layer, analyzable area of each layers were exposed by using a proper solvent and were investigated using ATR FT-IR and pyro GC/MS. Results shows that three layers were commonly consisted of urethane-acrylate copolymers. Also, inorganic and/or metal inclusions detected by XPS and SEM-EDAX were exhibited by nano size $SiO_2$ particles in layer(1) and aluminum flakes in layer(2).

PET기재 필름 위에 코팅된 다층박막 필름의 층별성분을 ATR FT-IR과 Pyro GC/MS(Gas Chromatography/Mass Spectroscopy)를 이용하여 분석을 시도하였다. 필름의 단면은 액체질소에 담근 후 파괴시켜 얻었으며 광학 현미경을 이용하여 관찰하였다. 이 결과 코팅층의 총 두께는 $70{\mu}m$였으며 3개의 층으로 관찰되었다. 각 층의 두께는 너무 얇기 때문에 표면층을 제외하고는 직접분석이 어려워 적절한 용매로서 각 층을 드러나게 한 후 ATR FT-IR과 pyro-GC/MS를 이용하여 분석을 시도하였다. 이 결과 3개 층은 공통적으로 우레탄-아크릴레이트 공중합체로 밝혀졌다. 또한 무기 혹은 금속성분의 첨가여부는 XPS와 SEM-EDAX를 이용하여 분석하였으며 도장층 (1)에는 나노크기의 실리카 입자가 도장층 (2)에서는 알루미늄 박편이 존재함을 알게 되었다.

Keywords

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