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Capillary condensation of colloid-polymer mixtures confined between parallel plates

Schmidt, M, Fortini, A and Dijkstra, M (2003) Capillary condensation of colloid-polymer mixtures confined between parallel plates Journal of Physics Condensed Matter, 15 (48 SPE).

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We investigate the fluid-fluid demixing phase transition of the Asakura-Oosawa model colloid-polymer mixture confined between two smooth parallel hard walls using density functional theory and computer simulations. Comparing fluid density profiles for statepoints away from colloidal gas-liquid coexistence yields good agreement of the theoretical results with simulation data. Theoretical and simulation results predict consistently a shift of the demixing binodal and the critical point towards higher polymer reservoir packing fraction and towards higher colloid fugacities upon decreasing the plate separation distance. This implies capillary condensation of the colloid liquid phase, which should be experimentally observable inside slitlike micropores in contact with a bulk colloidal gas.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Schmidt, M
Dijkstra, M
Date : 10 December 2003
DOI : 10.1088/0953-8984/15/48/002
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:23
Last Modified : 24 Jan 2020 23:53

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