Influence of Double-layer Polarization and Chemiosmosis on the Diffusiophoresis of a Non-spherical Polyelectrolyte

doi:10.1016/j.jcis.2015.01.059

淡江大學機構典藏 > 理學院 > 數學學系暨研究所 > 期刊論文 > Item 987654321/109561

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题名:	Influence of Double-layer Polarization and Chemiosmosis on the Diffusiophoresis of a Non-spherical Polyelectrolyte
作者:	Tseng, Shiojenn;Lin, D. H.;Hsu, J. P.
关键词:	Diffusiophoresis;Non-spherical polyelectrolyte;Double-layer polarization;Chemiosmosis
日期:	2015-05-15
上传时间:	2017-02-24 02:10:46 (UTC+8)
摘要:	The diffusiophoresis of a non-spherical polyelectrolyte (PE) is modeled theoretically by considering an ellipsoidal PE of fixed volume and varying aspect ratio, capable of simulating porous entities such as DNAs, proteins, and synthetic polymeric particles. A continuum model comprising coupled Poisson–Nernst–Planck equations and Stokes equations is adopted. Parameters including the physicochemical properties of a PE, the degree of deformation, and the bulk ionic concentration are examined in detail for their influence on the diffusiophoretic behavior of the PE. We show that the effects of double-layer polarization, polarization of the condensed counterions inside a PE, and the chemiosmotic retardation flow inside it yield complicated diffusiophoretic behavior. In particular, the mobility of an elliptic PE can differ both quantitatively and qualitatively from that of a spherical PE. This phenomenon, which has not been reported previously, provides valuable information for both experimental data interpretation and device design.
關聯:	Journal of Colloid and Interface Science 446, pp.272-281
DOI:	10.1016/j.jcis.2015.01.059
显示于类别:	[數學學系暨研究所] 期刊論文

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