Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains
We study the phase behaviour of mixtures of colloidal spheres and polymers that have an excluded-volume interaction dispersed in a (background) solvent using the concept of free volume theory. The depletion layer thickness is calculated from the negative adsorption of polymer segments around a spher...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2002
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| _version_ | 1797084022000582656 |
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| author | Aarts, D Tuinier, R Lekkerkerker, H |
| author_facet | Aarts, D Tuinier, R Lekkerkerker, H |
| author_sort | Aarts, D |
| collection | OXFORD |
| description | We study the phase behaviour of mixtures of colloidal spheres and polymers that have an excluded-volume interaction dispersed in a (background) solvent using the concept of free volume theory. The depletion layer thickness is calculated from the negative adsorption of polymer segments around a sphere. The correlation length and thermodynamic properties of the excluded-volume interacting polymer chains in solution are taken into account by using results from the renormalization group theory. For small polymer-colloid size ratios the difference from an ideal description of the polymers is small, while for larger size ratios the gas-liquid coexistence region shifts in the direction of higher polymer concentrations and at the same time the liquid-crystal coexistence region becomes more extended. Both the gas-liquid region and the gasliquid-crystal region become less extended. These features are compared to experiment. |
| first_indexed | 2024-03-07T01:49:47Z |
| format | Journal article |
| id | oxford-uuid:99b0af5a-b626-43f8-a421-485f4ef0b008 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:49:47Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:99b0af5a-b626-43f8-a421-485f4ef0b0082022-03-27T00:16:05ZPhase behaviour of mixtures of colloidal spheres and excluded-volume polymer chainsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:99b0af5a-b626-43f8-a421-485f4ef0b008EnglishSymplectic Elements at Oxford2002Aarts, DTuinier, RLekkerkerker, HWe study the phase behaviour of mixtures of colloidal spheres and polymers that have an excluded-volume interaction dispersed in a (background) solvent using the concept of free volume theory. The depletion layer thickness is calculated from the negative adsorption of polymer segments around a sphere. The correlation length and thermodynamic properties of the excluded-volume interacting polymer chains in solution are taken into account by using results from the renormalization group theory. For small polymer-colloid size ratios the difference from an ideal description of the polymers is small, while for larger size ratios the gas-liquid coexistence region shifts in the direction of higher polymer concentrations and at the same time the liquid-crystal coexistence region becomes more extended. Both the gas-liquid region and the gasliquid-crystal region become less extended. These features are compared to experiment. |
| spellingShingle | Aarts, D Tuinier, R Lekkerkerker, H Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title | Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title_full | Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title_fullStr | Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title_full_unstemmed | Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title_short | Phase behaviour of mixtures of colloidal spheres and excluded-volume polymer chains |
| title_sort | phase behaviour of mixtures of colloidal spheres and excluded volume polymer chains |
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