Particle adsorption under irreversible conditions: kinetics and jamming coverage
Particle adsorption under irreversible conditions: kinetics and jamming coverage
复制标题
DOI：
10.1016/s0927-7757(02)00099-7
复制
发表时间：
2002-08-14
影响因子：
5.2
通讯作者：
Musial, E
中科院分区：
文献类型：
--
作者：
Adamczyk, Z;Weronski, P;Musial, E
对蛋白质和胶体颗粒在固/液界面上的不可逆吸附进行了理论分析。讨论了描述表面质量平衡方程的表达式，该表达式可作为整体传质方程的边界条件。在吸附时间短和吸附时间长的情况下，建立了动力学解析方程。结果表明，在长时间表达式中起关键作用的是最大(干扰)覆盖率，该覆盖率可以用随机顺序吸附方法进行数值推导。在球体和椭球的情况下，讨论了用该模型得到的结果。还提出了将硬(非相互作用)粒子的结果推广到相互作用的粒子的方法。结果表明，静电双电层相互作用显著降低了吸附粒子单层的最大复盖率，并影响了吸附粒子单层的结构，用对关联函数进行了定量分析。(C)2002 Elsevier Science B.V.保留所有权利。
Irreversible adsorption of protein and colloid particles at solid/liquid interfaces was analysed theoretically. The expression describing the surface mass balance equation was discussed which can be used as boundary condition for the bulk mass transfer equation. Analytical kinetic equations were derived in the limit of short and long adsorption time. It was shown that the crucial role in the long-time expressions plays the maximum (jamming) coverage which can be derived numerically by applying the random sequential adsorption approach. The results obtained by using this model were discussed in the case of spheres and spheroids. Methods of extending results obtained for hard (noninteracting) particles to interacting particles were also presented. It was demonstrated that the electrostatic double-layer interactions decreased considerably the maximum coverage and influenced the structure of the adsorbed particle mono-layer analysed quantitatively in terms of the pair correlation function. (C) 2002 Elsevier Science B.V. All rights reserved.