Diffusion of two associated solvents in various compositions through a swelling polymer material,EVAc |
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| Authors: | A Oughilas O Roukbi A Benghalem M Zouaoui Rabah N Chafi |
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| Affiliation: | 1. Laboratory of Materials and Catalysis, Faculty of Science, BP 89 University Djillali Liabes of Sid Bel‐Abbes, 22000 Sid Bel‐Abbes, Algeria;2. Laboratory of Macromolecular and Organic Chemistry, Faculty of Science, BP 89 University Djillali Liabes of Sid Bel‐Abbes, 22000 Sid Bel‐Abbes, Algeria |
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| Abstract: | The particular sorption by a swelling polymer with the transfer of hydrocarbons was studied in order to evaluate some barrier properties of this material. The transfer of two types of solvents through two varieties of ethylene vinyl acetate was investigated: absorption of pure toluene and pure n‐hexane and absorption of a toluene/hexane mixture in various compositions. A comparison between the two processes showed that these transfers were very different and depended on two factors: vinyl acetate content and composition of the mixture. The kinetics of absorption were calculated for various compositions. The profiles of concentration as well as the kinetics of swelling were evaluated using a numerical model deduced from the general theory of radial diffusion of a substance with change in dimensions. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2099–2106, 2007 |
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| Keywords: | swelling mixture solvents polymer diffusion |
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