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Effective interactions between star polymers and colloidal particles | | A. Jusufi
; J. Dzubiella
; C.N. Likos
; C. von Ferber
; H. Loewen
; | | Date: |
20 Dec 2000 | | Journal: | J. Phys.: Condens. Matter 13 (2001) 6177 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | Using monomer-resolved Molecular Dynamics simulations and theoretical arguments based on the radial dependence of the osmotic pressure in the interior of a star, we systematically investigate the effective interactions between hard, colloidal particles and star polymers in a good solvent. The relevant parameters are the size ratio q between the stars and the colloids, as well as the number of polymeric arms f (functionality) attached to the common center of the star. By covering a wide range of q’s ranging from zero (star against a flat wall) up to about 0.75, we establish analytical forms for the star-colloid interaction which are in excellent agreement with simulation results. A modified expression for the star-star interaction for low functionalities, f < 10 is also introduced. | | Source: | arXiv, cond-mat/0012384 | | Services: | Forum | Review | PDF | Favorites | |
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