Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials
The transport properties of the poly(ethylene-co-vinyl acetate) (EVA) materials to He, N2, O2, and CO2 are correlated with two polymer molecular structure parameters, that is, cohesive energy density (CED) and fractional free volume (FFV), determined by the group contribution method. In our precedin...
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doaj-b2d79b0e94514a3e8acaac663af1353f2020-11-24T23:38:18ZengHindawi LimitedInternational Journal of Polymer Science1687-94221687-94302015-01-01201510.1155/2015/861979861979Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) MaterialsPiotr Kubica0Aleksandra Wolinska-Grabczyk1Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Marie Curie-Sklodowskiej 34, 41-819 Zabrze, PolandCentre of Polymer and Carbon Materials, Polish Academy of Sciences, Marie Curie-Sklodowskiej 34, 41-819 Zabrze, PolandThe transport properties of the poly(ethylene-co-vinyl acetate) (EVA) materials to He, N2, O2, and CO2 are correlated with two polymer molecular structure parameters, that is, cohesive energy density (CED) and fractional free volume (FFV), determined by the group contribution method. In our preceding paper, the attempt was made to approximate EVA permeability using a linear function of 1/FFV as predicted by the free volume theory. However, the deviations from this relationship appeared to be significant. In this paper, it is shown that permeation of gas molecules is controlled not only by free volume but also by the polymer cohesive energy. Moreover, the behavior of CO2 was found to differ significantly from that of other gases. In this instance, the correlation is much better when diffusivity instead of permeability is taken into account in a modified transport model.http://dx.doi.org/10.1155/2015/861979 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Piotr Kubica Aleksandra Wolinska-Grabczyk |
spellingShingle |
Piotr Kubica Aleksandra Wolinska-Grabczyk Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials International Journal of Polymer Science |
author_facet |
Piotr Kubica Aleksandra Wolinska-Grabczyk |
author_sort |
Piotr Kubica |
title |
Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials |
title_short |
Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials |
title_full |
Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials |
title_fullStr |
Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials |
title_full_unstemmed |
Correlation between Cohesive Energy Density, Fractional Free Volume, and Gas Transport Properties of Poly(ethylene-co-vinyl acetate) Materials |
title_sort |
correlation between cohesive energy density, fractional free volume, and gas transport properties of poly(ethylene-co-vinyl acetate) materials |
publisher |
Hindawi Limited |
series |
International Journal of Polymer Science |
issn |
1687-9422 1687-9430 |
publishDate |
2015-01-01 |
description |
The transport properties of the poly(ethylene-co-vinyl acetate) (EVA) materials to He, N2, O2, and CO2 are correlated with two polymer molecular structure parameters, that is, cohesive energy density (CED) and fractional free volume (FFV), determined by the group contribution method. In our preceding paper, the attempt was made to approximate EVA permeability using a linear function of 1/FFV as predicted by the free volume theory. However, the deviations from this relationship appeared to be significant. In this paper, it is shown that permeation of gas molecules is controlled not only by free volume but also by the polymer cohesive energy. Moreover, the behavior of CO2 was found to differ significantly from that of other gases. In this instance, the correlation is much better when diffusivity instead of permeability is taken into account in a modified transport model. |
url |
http://dx.doi.org/10.1155/2015/861979 |
work_keys_str_mv |
AT piotrkubica correlationbetweencohesiveenergydensityfractionalfreevolumeandgastransportpropertiesofpolyethylenecovinylacetatematerials AT aleksandrawolinskagrabczyk correlationbetweencohesiveenergydensityfractionalfreevolumeandgastransportpropertiesofpolyethylenecovinylacetatematerials |
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