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    題名: Stability of a dispersion of particles covered by a charge-regulated membrane : Effect of the sizes of charged species
    作者: Hsu, Jyh-ping;Huang, Shih-Wei;Kuo, Yung-Chih;曾琇瑱;Tseng, Shio-jenn
    貢獻者: 淡江大學數學學系
    關鍵詞: Stability ratio;Charge-regulated surface;Amphoteric surface;Ionic sizes
    日期: 2003-06-01
    上傳時間: 2010-01-28 07:10:45 (UTC+8)
    出版者: Elsevier
    摘要: The influence of the sizes of charged species on the stability of a colloidal dispersion is investigated theoretically. We consider the case where a particle comprises a rigid core and an amphoteric, charge-regulated membrane layer, which simulates biocolloids and particles covered by artificial membranes. A modified Poisson–Boltzmann equation, which takes the sizes of all the charged species into account, is adopted to describe the electrical field. The effects of other key parameters such as electrolyte concentration, pH, and the valence of counterions on the behavior of a dispersion are also examined. We show that the larger the effective size of the counterions, the greater the stability ratio, which is consistent with experimental observations in the literature.
    關聯: Journal of Colloid and Interface Science 262(1), pp.73-80
    DOI: 10.1016/S0021-9797(03)00197-8
    顯示於類別:[數學學系暨研究所] 期刊論文

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