Electrostatic interactions for a particle-containing shell-and-core system

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题名:	Electrostatic interactions for a particle-containing shell-and-core system
作者:	Tsao,HK;Sheng,YJ
贡献者:	化學工程與材料工程學系
关键词:	AOT REVERSE MICELLES;CYTOCHROME-C;ALPHA-CHYMOTRYPSIN;PROTEIN;MICROEMULSIONS;PERCOLATION;THERMODYNAMICS;FLUORESCENCE;MODEL
日期:	1998
上传时间:	2010-06-29 17:29:38 (UTC+8)
出版者:	中央大學
摘要:	The electrostatic interactions for a particle-containing shell-and-core system are studied on the basis of the Poisson-Boltzmarn equation under the Debye-Huckel approximation. Analytical expressions for the electrostatic potential distributions are obtained for arbitrary charge distributions on both the shell and the particle surfaces. On the basis of a charging process, the electrostatic free energy of the system is also obtained. The free energy consists of the self-energy and the interaction energy. The self-energy depends only on the surface charge density of the particle or the shell itself. The interaction energy arises from the interactions between the same modes on both surfaces when the particle is in concentric position with the outer shell. In general, the self-energy dominates over the interaction energy. The effects of surface charge distributions of the inner particle on the electrostatic free energy of the systems are explored. The electrostatic free energy associated with the net charge effect in the aqueous core is also investigated. It is found that when the particle and the shell possess charges of the same sign, the free energy associated with net charge effect is lower than that of the opposite sign. The contribution due to net charge effect can be neglected when enough electrolytes are added into the aqueous core. (C) 1998 Academic Press.
關聯:	JOURNAL OF COLLOID AND INTERFACE SCIENCE
显示于类别:	[化學工程與材料工程研究所] 期刊論文

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