Diffusing probe measurements of polystyrene latex particles in polyelectrolyte solutions: Deviations from Stokes-Einstein behavior

被引:34
作者
Dunstan, DE [1 ]
Stokes, J [1 ]
机构
[1] Univ Melbourne, Dept Chem Engn, CRC Bioprod, Parkville, Vic 3052, Australia
关键词
D O I
10.1021/ma9908503
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The diffusion coefficients of polystyrene latex spheres in both Newtonian and elastic liquids have been measured using dynamic light scattering. The diffusion coefficients of the latex particles measured in glycerol/water (Newtonian) solutions obey Stokes-Einstein behavior over a range of solvent viscosity and temperature. Two apparent diffusion coefficients for the particles are measured in viscoelastic polyacrylamide solutions and are designated D-fast and D-slow. The apparent fast diffusion coefficients measured in the polyacrylamide solutions show an increase to a maximum, above that measured in the solvent water, with increasing polyacrylamide concentration. The apparent fast diffusion coefficient is seen to increase to twice that measured in the water solvent. At higher polyacrylamide concentrations the observed D-fast values decrease below the value obtained in the solvent water. D-fast increases with the scattering vector (q) while D-slow is independent of q.
引用
收藏
页码:193 / 198
页数:6
相关论文
共 34 条
[11]   Effect of solvent quality on the diffusion of polystyrene latex spheres in solutions of poly(methyl methacrylate) [J].
Gold, D ;
Onyenemezu, C ;
Miller, WG .
MACROMOLECULES, 1996, 29 (17) :5700-5709
[12]   Diffusion of polystyrene latex spheres through isotropic rigid rod polymer solutions [J].
Gold, D ;
Onyenemezu, C ;
Miller, WG .
MACROMOLECULES, 1996, 29 (17) :5710-5716
[14]   PROBE DIFFUSION IN POLYACRYLIC-ACID WATER - EFFECT OF POLYMER MOLECULAR-WEIGHT [J].
LIN, TH ;
PHILLIES, GDJ .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1984, 100 (01) :82-95
[15]   PROBE DIFFUSION IN POLY(ACRYLIC ACID) WATER - EFFECT OF PROBE SIZE [J].
LIN, TH ;
PHILLIES, GDJ .
MACROMOLECULES, 1984, 17 (09) :1686-1691
[16]   NATURE AND EFFECTS OF NONEXPONENTIAL CORRELATION-FUNCTIONS IN PROBE DIFFUSION EXPERIMENTS BY QUASIELASTIC LIGHT-SCATTERING [J].
MUSTAFA, M ;
RUSSO, PS .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1989, 129 (01) :240-253
[17]   DIFFUSION OF POLYSTYRENE LATEX SPHERES IN LINEAR POLYSTYRENE NONAQUEOUS SOLUTIONS [J].
ONYENEMEZU, CN ;
GOLD, D ;
ROMAN, M ;
MILLER, WG .
MACROMOLECULES, 1993, 26 (15) :3833-3837
[18]   ANOMALOUS DIFFUSION IN LIVING POLYMERS - A GENUINE LEVY FLIGHT [J].
OTT, A ;
BOUCHAUD, JP ;
LANGEVIN, D ;
URBACH, W .
PHYSICAL REVIEW LETTERS, 1990, 65 (17) :2201-2204
[19]   PROBE DIFFUSION IN SOLUTIONS OF LONG-CHAIN POLYELECTROLYTES [J].
PHILLIES, GDJ ;
MALONE, C ;
ULLMANN, K ;
ULLMANN, GS ;
ROLLINGS, J ;
YU, LP .
MACROMOLECULES, 1987, 20 (09) :2280-2289
[20]   TRANSPORT IN INTERMEDIATE AND HIGH-MOLECULAR-WEIGHT HYDROXYPROPYLCELLULOSE WATER SOLUTIONS [J].
PHILLIES, GDJ ;
RICHARDSON, C ;
QUINLAN, CA ;
REN, SZ .
MACROMOLECULES, 1993, 26 (25) :6849-6858