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    題名: Diffusiophoresis of a pH-regulated, zwitterionic polyelectrolyte in a solution containing multiple ionic species
    作者: Tseng, Shiojenn;Su, Chun-Yuan;Hsu, Jyh-Ping
    貢獻者: 淡江大學數學學系
    關鍵詞: Diffusiophoresis;Polyelectrolyte;pH-regulated and zwitterionic;Multiple ionic species
    日期: 2014-10-01
    上傳時間: 2015-05-08 09:54:15 (UTC+8)
    出版者: Kidlington: Pergamon Press
    摘要: The diffusiophoresis of a pH-regulated, zwitterionic polyelectrolyte (PE) simulating entities such as DNAs, proteins, and synthetic polymeric particles in a solution containing multiple ionic species is modeled theoretically. The results of numerical simulation reveal that the diffusiophoretic behavior of the PE is influenced significantly by its physicochemical properties, the solution pH, the bulk salt concentration, and the types of ionic species. In particular, both the magnitude and the sign of the PE mobility are influenced appreciably by the bulk salt concentration and the types of ionic species. We show that the induced electric field coming from the applied concentration gradient is weakened by the movement of H+ and OH−. This phenomenon is more appreciable when pH is away from the isoelectric point of a PE. The results obtained provide valuable and necessary information for the design of diffusiophoresis devices.
    關聯: Chemical Engineering Science 118, pp.164-172
    DOI: 10.1016/j.ces.2014.07.038
    顯示於類別:[數學學系暨研究所] 期刊論文

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