Neutron scattering study of depletion interactions in a colloid-polymer mixture

被引：70

作者：

Ye, X

Narayanan, T

Tong, P

机构：

[1] OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078

[2] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.76.4640

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a neutron scattering study of depletion interactions in a mixture of colloid and nonadsorbing polymer. It is found that the measured colloidal structure factor can be well described by an effective interaction potential for the polymer-induced depletion attraction between the colloidal particles. The amplitude of the attraction is found to increase linearly with the polymer concentration but it levels off at higher polymer concentrations.

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页码：4640 / 4643

页数：4

相关论文

共 26 条

[1] STRUCTURE AND RESISTIVITY OF LIQUID METALS [J].

ASHCROFT, NW ;

LEKNER, J .

PHYSICAL REVIEW, 1966, 145 (01) :83-&

[2] PHASE-SEPARATION OF ASYMMETRIC BINARY HARD-SPHERE FLUIDS [J].

BIBEN, T ;

HANSEN, JP .

PHYSICAL REVIEW LETTERS, 1991, 66 (17) :2215-2218

[3] DEPLETION INTERACTIONS AND FLUID-SOLID EQUILIBRIUM IN EMULSIONS [J].

BIBETTE, J ;

ROUX, D ;

NALLET, F .

PHYSICAL REVIEW LETTERS, 1990, 65 (19) :2470-2473

[4] EVIDENCE FOR ENTROPY-DRIVEN DEMIXING IN HARD-CORE FLUIDS [J].

DIJKSTRA, M ;

FRENKEL, D .

PHYSICAL REVIEW LETTERS, 1994, 72 (02) :298-300

[5] PHASE-SEPARATION IN BINARY HARD-CORE MIXTURES - AN EXACT RESULT [J].

FRENKEL, D ;

LOUIS, AA .

PHYSICAL REVIEW LETTERS, 1992, 68 (22) :3363-3365

[6] 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

[7]

HANSEN JP, 1991, THEORY SIMPLE LIQUID

[8] 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

[9] EXPERIMENTAL PHASE-DIAGRAM OF A BINARY COLLOIDAL HARD-SPHERE MIXTURE WITH A LARGE-SIZE RATIO [J].

IMHOF, A ;

DHONT, JKG .

PHYSICAL REVIEW LETTERS, 1995, 75 (08) :1662-1665

[10] ENTROPICALLY DRIVEN SURFACE PHASE-SEPARATION IN BINARY COLLOIDAL MIXTURES [J].

KAPLAN, PD ;

ROUKE, JL ;

YODH, AG ;

PINE, DJ .

PHYSICAL REVIEW LETTERS, 1994, 72 (04) :582-585