On the similarity between the electrophoresis of a liquid drop and a spherical hydrophobic particle

被引:36
作者
Gopmandal, Partha P. [1 ]
Bhattacharyya, S. [2 ]
Ohshima, H. [3 ]
机构
[1] Natl Inst Technol Patna, Dept Math, Patna 800005, Bihar, India
[2] Indian Inst Technol Kharagpur, Dept Math, Kharagpur 721302, W Bengal, India
[3] Tokyo Univ Sci, Fac Pharmaceut Sci, Noda, Chiba, Japan
关键词
Electrophoresis; Liquid drop; Hydrophobic colloid; Slip length; CHARGED MERCURY DROPS; COLLOIDAL PARTICLES; SOFT PARTICLES; ELECTROKINETIC PHENOMENA; DILUTE SUSPENSION; MOBILITY; LAYER; CATAPHORESIS; VELOCITY;
D O I
10.1007/s00396-017-4181-y
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 ; 081704 ;
摘要
This article deals with the electrophoresis of a charged spherical liquid drop and a charged hydrophobic sphere under a weak electric field and low surface potential assumption. The main aim of this study is to establish an equivalence between the two cases. An expression for the mobility of a hydrophobic particle is derived based on the model for electrophoresis of a charged non-conducting liquid drop (Ohshima et al., J Chem Soc Faraday Trans 2, 80, 1643-1667, 1984). The derived expression for mobility of a charged hydrophobic particle reduces to the Henry mobility when slip length approaches zero. This expression is also validated by comparing with the existing thin layer analysis as well as mobility in a medium of approximately zero charge density.
引用
收藏
页码:2077 / 2082
页数:6
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