Ohshima Hiroyuki, Hyono Atsushi
Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
J Colloid Interface Sci. 2009 May 1;333(1):202-8. doi: 10.1016/j.jcis.2008.11.060. Epub 2009 Feb 13.
An expression for the potential energy of electrostatic interaction between two soft cylinders (i.e., polyelectrolyte-coated cylindrical particles) in an electrolyte solution is derived by applying Derjaguin's approximation to the corresponding interaction energy between two parallel soft plates for the case where the density of fixed charges within the polyelectrolyte layer is low. The interaction between two parallel cylinders and that between two crossed cylinders are considered. The obtained expression covers various limiting cases that include hard cylinder/hard cylinder interaction, cylindrical polyelectrolyte/cylindrical polyelectrolyte interaction, soft cylinder/cylindrical polyelectrolyte interaction, soft cylinder/hard cylinder interaction, and cylindrical polyelectrolyte/hard cylinder interaction.
通过将德亚金近似应用于两个平行软板之间的相应相互作用能，推导出了电解质溶液中两个软圆柱体（即聚电解质包覆的圆柱形颗粒）之间静电相互作用势能的表达式，该情况适用于聚电解质层内固定电荷密度较低的情况。考虑了两个平行圆柱体之间以及两个交叉圆柱体之间的相互作用。所得到的表达式涵盖了各种极限情况，包括硬圆柱体/硬圆柱体相互作用、圆柱形聚电解质/圆柱形聚电解质相互作用、软圆柱体/圆柱形聚电解质相互作用、软圆柱体/硬圆柱体相互作用以及圆柱形聚电解质/硬圆柱体相互作用。
