Electrophoresis of ionic microgel particles:: From charged hard spheres to polyelectrolyte-like behavior -: art. no. 084702

被引：33

作者：

Fernández-Nieves, A ^{[1
]}

Márquez, M

机构：

[1] Univ Almeria, Dept Appl Phys, Grp Complex Fluids Phys, Almeria 04120, Spain

[2] PMUSA, New Technol Res Dept, INEST Grp, Richmond, VA 23298 USA

[3] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2005年 / 122卷 / 08期

关键词：

D O I：

10.1063/1.1844392

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

We perform electrophoretic mobility measurements of ionic microgel particles in the deswollen and swollen phases. The results show that microgels behave as charged hard spheres in the first case and as free-draining spherical polyelectrolytes in the latter. A unified theory for the electrophoresis of polyelectrolyte-coated particles [H. Ohshima, Adv. Colloid Interface Sci. 62, 189 (1995)] is shown to contain the essential physics for describing the experiments, upon adequate consideration of the particles swelling behavior and network-solvent friction variations. (C) 2005 American Institute of Physics.

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