Determination of static and dynamic interactions between monodisperse, charged silica spheres in an optically matching, organic solvent
Determination of static and dynamic interactions between monodisperse, charged silica spheres in an optically matching, organic solvent
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测定光学匹配有机溶剂中单分散带电二氧化硅球之间的静态和动态相互作用
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
A. Vrij
中科院分区：
文献类型：
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作者：
A. Philipse;A. Vrij
静态和动态之间的相互作用的单分散，带电的二氧化硅球悬浮在一个光学匹配，无盐的乙醇和甲苯的混合物的体积分数为10%的光散射研究。通过RMSA近似计算得到的静态结构因子S（K）与依赖于波矢量（K）的（短时）扩散系数De（K）相结合，得到代表流体动力相互作用的函数H（K）。从第一次获得的带电粒子的H（K），我们得出结论，球体之间的长程静电斥力对大尺度集体粒子运动的流体力学有显著影响，而小尺度单粒子扩散相对不受影响。
A light scattering study is presented on static and dynamic interactions between monodisperse, charged silica spheres suspended in an optically matching, salt free mixture of ethanol and toluene up to volume fractions of 10%. The static structure factor S(K), well described by calculations in the RMSA approximation, is combined with the wave vector (K) dependent (short‐time) diffusion coefficient De(K) to give the function H(K) which represents the hydrodynamic interactions. From H(K), obtained for the first time for charged particles, we conclude that the long‐range electrostatic repulsion between the spheres has a pronounced influence on the hydrodynamics of large‐scale, collective particle motions, whereas small‐scale single‐particle diffusion is relatively unaffected.