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  Determination of permeation parameters of experimental PET films coated with SiO x to ethyl acetate, oxygen and water vapour
 
 
Titel: Determination of permeation parameters of experimental PET films coated with SiO x to ethyl acetate, oxygen and water vapour
Auteur: Adamantiadi, A.
Badeka, A.
Kontominas, M. G.
Verschenen in: Food additives and contaminants. Pt. A, Chemistry, analysis, control, exposure & risk assessment
Paginering: Jaargang 18 (2001) nr. 11 pagina's 1046-1054
Jaar: 2001-11-01
Inhoud: The permeation parameters of conventional PET films, films coated with SiO x and SiO x -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 SiO x coating increased the film barrier to ethyl acetate by ~ 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.
Uitgever: Taylor & Francis
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

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