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Development of surface functional coating thin film utilizing combined processes of plasma activation surface treatment and nanoclay dispersion: In applications for transparent water vapor and oxygen barrier packaging films

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2023, 33(3), pp.97-103
  • DOI : 10.6111/JKCGCT.2023.33.3.097
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 31, 2023
  • Accepted : June 12, 2023
  • Published : June 30, 2023

Kim, Namil 1 Geug Tae Kim 1

1한남대학교

Accredited

ABSTRACT

Barrier films for transparent packaging materials with excellent moisture barrier properties are prepared, utilizing a nanoclay dispersion coating layer formed after a pretreatment process of plasma activation surface treatment process under vacuum at room temperature. Attention is paid on optimizing the coupling additive through the appropriate crosslinkingprocess and optimal dispersion process of the coating process to enhance adhesion. Analysis of the functional coating thin film shows that the water vapor transmission rate is less than 10 g/m²/24 hrs (ASTM F-1249) and the oxygen transmission rate is less than 30 cc/m²/24 hrs (ASTM D3985). It is shown that water barrier properties of coating thin film prepared in this study are greater than conventional untreated films by 10 times or more. The thickness of the transparent gas barrier film is within 0.1 mm, and the transparent gas barrier complex is implemented in two layers. In the study of PET thin filminterface characteristics, FT-IR experimental analysis shows the reaction activity was optimized at RDS 1.125 %.

Citation status

* References for papers published after 2023 are currently being built.