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Effect of organic vapour interaction on permeation rate through polymer films
Author(s) -
Theodorou Efthimios,
Paik James S.
Publication year - 1992
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.2770050106
Subject(s) - low density polyethylene , solubility , permeation , citral , polymer , ethyl butyrate , ionomer , materials science , vapor pressure , hildebrand solubility parameter , chemistry , chemical engineering , organic chemistry , chromatography , composite material , membrane , essential oil , ethyl acetate , biochemistry , copolymer , engineering
The permeability coefficients ( P ) of linalool, citral ethyl butyrate, d‐limonene and octanal permeating through LDPE and ionomer films were measured alone as individual and as a component of a mixture at a temperature of 23 °C and in saturated water vapour. Values of P for ionomer film were approximately two orders of magnitude below those for LDPE for the compounds tested. Both PET and PETG films were found to be much better barriers against the compounds tested than LDPE and ionomer films. In general, the permeability, diffusion and solubility coefficients ( P. D , and S ) values measured in mixture were substantially less than the values obtained individually. Permeability behaviour of these compounds at low concentrations in the mixture was similar to that of permanent gases. Reduction of solubility coefficients in mixture permeation was greater with the higher solubility coefficients. These results provide a better understanding of the mechanism of vapour diffusion through polymers.