Influence of Membrane Layer Properties on the Electrophoretic Behavior of a Soft Particle
學年 100
學期 1
出版（發表）日期 2011-11-01
作品名稱 Influence of Membrane Layer Properties on the Electrophoretic Behavior of a Soft Particle
作品名稱（其他語言）
著者 Liu, Kuan-Liang; Hsu, Jyh-Ping; Tseng, Shiojenn
單位 淡江大學數學學系
出版者 Weinheim: Wiley - V C H Verlag GmbH & Co. KGaA
著錄名稱、卷期、頁數 Electrophoresis 32(21), pp.3053-3061
摘要 The influence of the physical properties of the membrane layer of a soft particle, which comprises a rigid core and a porous membrane layer, on its electrophoretic behavior, is investigated. Because that influence was almost always neglected in the previous studies, the corresponding results can be unrealistic. The applicability of the model proposed is verified by the available theoretical and experimental results. The electrophoretic mobility of the particle under various conditions is simulated through varying the dielectric constant, the thickness, and the drag coefficient of the membrane layer, and the bulk ionic concentration. We show that under typical conditions, the deviation in the electrophoretic mobility arising from assuming that the dielectric constant of the membrane layer is the same as that of the bulk liquid phase can be in the order of 50%. In addition, the thicker the membrane layer and/or the higher the bulk ionic concentration, the larger the deviation. If the surface of the core of the particle is charged, as in the case of inorganic particles covered by an artificial membrane layer, the deviation at constant core surface potential is larger than that under other types of charged conditions. However, if the surface of the core is uncharged, as in the case of biocolloids, then that deviation becomes negligible. These findings are of fundamental significance to theoreticians in their analysis on the electrokinetic behaviors of soft particles, and to experimentalists in the interpretation of their data.
關鍵字
語言 en
ISSN 0173-0835 1522-2683
期刊性質 國外
收錄於
產學合作
通訊作者 Hsu, Jyh-Ping
審稿制度 否
國別 DEU
公開徵稿
出版型式 ,電子版,紙本
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