Diffusiophoresis of a Soft, pH-regulated Particle in a Solution Containing Multiple Ionic Species
學年 103
學期 1
出版（發表）日期 2015-01-15
作品名稱 Diffusiophoresis of a Soft, pH-regulated Particle in a Solution Containing Multiple Ionic Species
作品名稱（其他語言）
著者 Tseng, Shiojenn.; Y. C. Chung; J. P. Hsu
單位
出版者
著錄名稱、卷期、頁數 Journal of Colloid and Interface Science 438, pp.196-203
摘要 The diffusiophoresis of a soft, pH-regulated particle comprising a rigid core and a polyelectrolyte (PE) layer in an aqueous salt solution containing multiple ionic species is modeled theoretically. We show that the diffusiophoretic behavior of a soft particle can be different appreciably from that of a rigid one. In particular, both the sign and the magnitude of the mobility of a soft particle can vary with the friction coefficient of its PE layer. In an aqueous KCl solution, if that coefficient is sufficiently large, the particle always moves towards the opposite direction as that of the applied concentration gradient, regardless of the pH level, an interesting observation which has not been reported previously. In an aqueous NaCl solution, if pH is sufficiently low, the particle mobility increases with increasing friction coefficient, an interesting and unexpected finding. The results obtained provide valuable and necessary information for both interpreting experimental data and design diffusiophoresis devices.
關鍵字 Diffusiophoresis;pH-regulated soft particle;Multiple ionic species;Double-layer polarization;Electrophoresis effect
語言 en_US
ISSN 0021-9797 1095-7103
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/109095 )