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
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.
引用
收藏
页码:4640 / 4643
页数:4
相关论文
共 26 条
[21]   ENTROPY-DRIVEN PHASE-SEPARATION IN BINARY EMULSIONS [J].
STEINER, U ;
MELLER, A ;
STAVANS, J .
PHYSICAL REVIEW LETTERS, 1995, 74 (23) :4750-4753
[22]   INTERACTIONS IN MIXTURES OF COLLOID AND POLYMER [J].
TONG, P ;
WITTEN, TA ;
HUANG, JS ;
FETTERS, LJ .
JOURNAL DE PHYSIQUE, 1990, 51 (24) :2813-2827
[23]   PHASE-SEPARATION IN BIMODAL DISPERSIONS OF STERICALLY STABILIZED SILICA PARTICLES [J].
VANDUIJNEVELDT, JS ;
HEINEN, AW ;
LEKKERKERKER, HNW .
EUROPHYSICS LETTERS, 1993, 21 (03) :369-374
[24]   POLYMERS AT INTERFACES AND INTERACTIONS IN COLLOIDAL DISPERSIONS [J].
VRIJ, A .
PURE AND APPLIED CHEMISTRY, 1976, 48 (04) :471-483
[25]   EFFECT OF POLYMER NONIDEALITY IN A COLLOID-POLYMER MIXTURE [J].
WARREN, PB ;
ILETT, SM ;
POON, WCK .
PHYSICAL REVIEW E, 1995, 52 (05) :5205-5213
[26]  
YE X, IN PRESS