Influence of polymer-excluded volume on the phase-behavior of colloid-polymer mixtures

被引:178
作者
Bolhuis, PG
Louis, AA
Hansen, JP
机构
[1] Univ Amsterdam, Dept Chem Engn, NL-1018 WV Amsterdam, Netherlands
[2] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
关键词
D O I
10.1103/PhysRevLett.89.128302
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We determine the depletion-induced phase-behavior of hard-sphere colloids and interacting polymers by large-scale Monte Carlo simulations using very accurate coarse-graining techniques. A comparison with standard Asakura-Oosawa model theories and simulations shows that including excluded-volume interactions between polymers leads to qualitative differences in the phase diagrams. These effects become increasingly important for larger relative polymer size. Our simulation results agree quantitatively with recent experiments.
引用
收藏
页码:1283021 / 1283024
页数:4
相关论文
共 35 条
[11]  
Frenkel D., 2010, UNDERSTANDING MOL SI
[12]   Structure and thermodynamics of colloid-polymer mixtures: A macromolecular approach [J].
Fuchs, M ;
Schweizer, KS .
EUROPHYSICS LETTERS, 2000, 51 (06) :621-627
[13]   POLYMER-INDUCED PHASE SEPARATIONS IN NON-AQUEOUS COLLOIDAL SUSPENSIONS [J].
GAST, AP ;
HALL, CK ;
RUSSEL, WB .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1983, 96 (01) :251-267
[14]   PHASE-BEHAVIOR OF A MODEL COLLOID-POLYMER MIXTURE [J].
ILETT, SM ;
ORROCK, A ;
POON, WCK ;
PUSEY, PN .
PHYSICAL REVIEW E, 1995, 51 (02) :1344-1352
[15]   DIRECT EVALUATION OF PHASE COEXISTENCE BY MOLECULAR SIMULATION VIA INTEGRATION ALONG THE SATURATION LINE [J].
KOFKE, DA .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (05) :4149-4162
[16]   GIBBS-DUHEM INTEGRATION - A NEW METHOD FOR DIRECT EVALUATION OF PHASE COEXISTENCE BY MOLECULAR SIMULATION [J].
KOFKE, DA .
MOLECULAR PHYSICS, 1993, 78 (06) :1331-1336
[17]   PHASE-BEHAVIOR OF COLLOID PLUS POLYMER MIXTURES [J].
LEKKERKERKER, HNW ;
POON, WCK ;
PUSEY, PN ;
STROOBANTS, A ;
WARREN, PB .
EUROPHYSICS LETTERS, 1992, 20 (06) :559-564
[18]  
LIINON FKR, 1975, ACS SYM SER, V9, P165
[19]   Density profiles and surface tension of polymers near colloidal surfaces [J].
Louis, AA ;
Bolhuis, PG ;
Meijer, EJ ;
Hansen, JP .
JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (23) :10547-10556
[20]   Polymer induced depletion potentials in polymer-colloid mixtures [J].
Louis, AA ;
Bolhuis, PG ;
Meijer, EJ ;
Hansen, JP .
JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (04) :1893-1907