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Dependence of fragmentation behavior of colloidal aggregates on their fractal structure

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タイトル: Dependence of fragmentation behavior of colloidal aggregates on their fractal structure
著者: Harada, S. 著作を一覧する
Tanaka, R. 著作を一覧する
Nogami, H. 著作を一覧する
Sawada, M. 著作を一覧する
キーワード: Aggregate
Breakup
Shear flow
Numerical analysis
Restructuring
Stokesian dynamics
発行日: 2006年 9月 1日
出版者: Elsevier Inc.
誌名: Journal of Colloid and Interface Science
巻: 301
号: 1
開始ページ: 123
終了ページ: 129
出版社 DOI: 10.1016/j.jcis.2006.04.051
抄録: The fragmentation dynamics of aggregate of non-Brownian particles in shear flow is investigated numerically. The breakup behaviors of aggregates having the same connectivity but the different space-filling properties are examined. The Lagrangian particle simulation in a linear flow field is performed. The effect of surrounding fluid on the motion of multiple particles is estimated by Stokesian dynamics approach. The inter-particle force is calculated from the retarded van der Waals potential based on the Lifshitz theory. The results obtained in this work indicate that the fragmentation behavior of colloidal aggregates depends on their fractal structure. However, if the resultant aggregate size is smaller than the critical one, the fragmentation behavior shows the universality regardless of their original structure. Furthermore, the restructuring of aggregate in shear flow and its effect on the fragmentation process are also discussed.
Relation (URI): http://www.sciencedirect.com/science/journal/00219797
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/14634
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 原田 周作

 

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