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首页> 外文学位 >Organic vapor permeability of transparent high-barrier films utilizing a high-performance thin aluminum oxide coating layer.
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Organic vapor permeability of transparent high-barrier films utilizing a high-performance thin aluminum oxide coating layer.

机译：利用高性能薄氧化铝涂层的透明高阻隔薄膜的有机蒸气渗透性。

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摘要

The organic vapor (d-limonene and ethyl acetate) permeability of Al 2O3-coated PET films and SiOx-coated PET films was studied. Evaluation was made utilizing the dynamic purge and trap/thermal desorption procedure.;There were no major differences observed between the permeability of the Al2O3 coated PET film and that of the SiOx -coated PET film which suggested that the mechanism of mass transfer through both films may be similar.;The effect of physical abuse on gas or vapor permeability was also evaluated for Al2O3-coated PET film. Barrier deterioration, caused by cracks of the ceramic surface, occurred at less than 10 times flexing abuse for both non-polar and polar permeant/Al2O3-coated PET systems. For Al2O3-coated PET/LLDPE laminated film samples, the loss in barrier performance varied for non-polar and polar perineants.;A simple model has been prepared to account for the observed permeability behavior for the Al2O3-coated PET film. This model provides an explanation for the permeability behavior of both normal (non-abused) and abused Al2O3-coated PET films.;A comparison of the permeability (and its temperature dependence) of Al2O3 coated PET film to various permeants (d-limonene, ethyl acetate, oxygen and water vapor) was made. Results showed that water vapor behaved significantly differently than other permeants, in terms of the mechanism of mass transfer.
机译：研究了Al 2O3涂层PET薄膜和SiOx涂层PET薄膜的有机蒸气渗透性（d-柠檬烯和乙酸乙酯）。使用动态吹扫和捕集/热脱附程序进行了评估。;在Al2O3涂层的PET薄膜和SiOx涂层的PET薄膜的渗透率之间没有观察到主要差异，这表明了通过这两个膜的传质机理可能是相似的。还对涂有Al2O3的PET膜评估了物理滥用对气体或蒸汽渗透性的影响。对于非极性和极性渗透性/ Al2O3涂层的PET系统，由陶瓷表面裂纹引起的屏障劣化发生在屈挠滥用的发生率不到10倍的情况下。对于Al2O3涂层的PET / LLDPE层压膜样品，阻隔性能的损失因非极性和极性的污染物而变化。该模型为正常（未滥用）和滥用的Al2O3涂层PET膜的渗透性行为提供了解释;比较了Al2O3涂层PET膜对各种渗透物（d-柠檬烯，制得乙酸乙酯，氧气和水蒸气。结果表明，就质量转移机理而言，水蒸气的行为与其他渗透物有显着差异。

著录项

  • 作者

    Suzuki, Hiroshi.;

  • 作者单位

    Michigan State University.;

  • 授予单位 Michigan State University.;
  • 学科 Polymer chemistry.;Food science.;Inorganic chemistry.;Packaging.
  • 学位 M.S.
  • 年度 1999
  • 页码 123 p.
  • 总页数 123
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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