Gel Electrophoresis: Importance of Concentration Dependent Permittivity and Double-Layer Polarization

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题名:	Gel Electrophoresis: Importance of Concentration Dependent Permittivity and Double-Layer Polarization
作者:	Hsu, Jyh-Ping;Huang, Chih-Hua;Tseng, Shiojenn
贡献者:	淡江大學數學學系
关键词:	Concentration-dependent permittivity;Double-layer polarization;Electrophoresis;Mathematical modeling;Nanoparticle;Transport processes
日期:	2012-12
上传时间:	2014-04-23 11:20:13 (UTC+8)
出版者:	Kidlington: Pergamon
摘要:	A gel-concentration dependent solution permittivity model is proposed for the first time, which is capable of fitting more accurately the experimental data in the literature than previous models, especially when gel concentration reaches ca. 3 wt%, which is not uncommon in practice. We show that gel polymer structure reduces the solution permittivity and raises the friction force acting on a particle, thereby reducing both its mobility and the degree of double-layer polarization (DLP), and interesting and important phenomenon in electrophoresis. If the viscosity of the liquid phase is sufficiently small and/or the hydrodynamic friction coefficient is sufficiently large, then DLP vanishes. This implies that the behavior of a particle in gel electrophoresis can be different both quantitatively and qualitatively from that in conventional electrophoresis.
關聯:	Chemical Engineering Science 84, pp.574-579
DOI:	10.1016/j.ces.2012.08.032
显示于类别:	[數學學系暨研究所] 期刊論文

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