Determination of permeation parameters of experimental PET films coated with SiOx to ethyl acetate, oxygen and water vapour

被引：5

作者：

Adamantiadi, A ^{[1
]}

Badeka, A ^{[1
]}

Kontominas, MG ^{[1
]}

机构：

[1] Univ Ioannina, Dept Chem, Food Chem & Technol Lab, GR-45110 Ioannina, Greece

来源：

FOOD ADDITIVES AND CONTAMINANTS | 2001年 / 18卷 / 11期

关键词：

permeation; SiOx-coated PET; ethyl acetate;

D O I：

10.1080/02652030110054768

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The permeation parameters of conventional PET films, films coated with SiOx and SiOx-coated films laminated to LDPE were determined for ethyl acetate using the permeation cell/gas chromatography method. Permeation to O-2 and water vapour was also determined to monitor overall changes in the barrier properties of the experimental films. Coating of the PET film was achieved by a 'directed evaporation' method that increased the yield of the coating process from 30-35 to > 70%. It was shown that the SiOx coating increased the film barrier to ethyl acetate by similar to 20-30 times. Permeation values showed low reproducibility, indicating the need for further development and standardization of the 'directed evaporation' web-coating process. The barrier to oxygen and water vapour increased by 20-25 and 12-14 times respectively after coating. The web-coating speed did not seem to influence the barrier properties of the films. Permeation coefficients, diffusion coefficients and solubility coefficients were calculated for all samples.

引用

页码：1046 / 1054

页数：9

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