The structure of colloid-polymer mixtures
University Chemical Laboratories -
Lensfield Rd., Cambridge CB2 1EW, UK
Accepted: 11 April 1999
We investigate the structure of colloid-polymer mixtures by calculating the structure factors for the Asakura-Oosawa model in the PY approximation. We discuss the role of potential range, polymer concentration and polymer-polymer interactions on the colloid-colloid structure. Our results compare reasonably well with the recent experiments of Moussaïd et al. (Moussaïd A., Poon W. C. K., Pusey P. N. and Soliva M. F. , Phys. Rev. Lett. 82 1999 225) for small wave number k, but we find that the Hansen-Verlet freezing criterion is violated when the liquid phase becomes marginal.
PACS: 61.20.-p – Structure of liquids / 82.70.Dd – Colloids
© EDP Sciences, 1999