Interactions between water and polystyrene |
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| Affiliation: | 1. School of Chemistry, University College of Science, University of Tehran, PO Box 14155-6455, Tehran, Iran;2. Department of Polymer Engineering, Sahand University of Technology, PO Box 51335-1996, Tabriz, Iran;1. Université de Rennes 1, UMR CNRS 6553 Ecobio, Campus de Beaulieu, 263 Avenue du Général Leclerc, CS 74205 35042 Rennes Cedex, France;2. Institut de Recherche pour le Développement (IRD), UMR IRD 224-CNRS 5290-Université de Montpellier MIVEGEC, 911 Avenue Agropolis, BP 64501, 34394 Montpellier cedex 5, France;3. Institut de Recherche en Sciences de la Santé (IRSS), Direction Régionale de l’Ouest (DRO), 399 Avenue de la Liberté 01, BP 545 Bobo-Dioulasso, Burkina Faso;4. Université Claude Bernard Lyon 1, UMR CNRS 5023 LEHNA, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France;5. Université de Rennes 1, UMR INRA IGEPP, Campus de Beaulieu, 263 Avenue du Général Leclerc, CS 74205, 35042 Rennes Cedex, France |
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| Abstract: | Water equilibrium in glassy polystyrene (Tg = 343 K) is described. Water content increases with increasing temperature and increasing water vapour pressure. The heats and entropies of mixing show that the polymer contains both free water and water sorbed on the chains, in small but approximately equal amounts; no noticeable clustering takes place. |
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