Étude des systémes ternaires polymère-mélanges de solvants: relation entre solvatation préférentielle et viscosité |
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| Authors: | A Dondos I Katime C Strazielle |
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| Institution: | 1. Université de Patras, Département de Génie Chimique, Patras, Grèce;2. Université de Bilbao, Département de Chimie-Physique, B.P. 644, Bilbao, Espagne France;3. Centre de Recherches sur les Macromolécules, CNRS 6, rue Boussingault, 67083 Strasbourg-Cedex, France |
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| Abstract: | The preferential solvation of ternary systems of polymer with mixed solvents is characterized by the λ′ parameter which depends on the thermodynamic properties of the system and also on some molecular parameters of the polymer (molecular weight, index of polydispersity, index of branching etc.). The dependence of λ′ on molecular parameters can be illustrated by a unique relation between the λ′ parameter and the intrinsic viscosity η]:λ′η] = λ′∝ η] + a′ +. This representation is verified for polystyrene and polymethyl methacrylate in several mixed solvents. |
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| Keywords: | Adresse pour la correspondance |
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