Böhmer MR, Koper GJM
Philips Research Laboratories Eindhoven (WA04), Prof. Holstlaan 4, Eindhoven, 5656 AA, The Netherlands
J Colloid Interface Sci. 1998 Jan 15;197(2):242-50. doi: 10.1006/jcis.1997.5236.
The kinetics of adsorption of nano-sized silica particles on a polymer pretreated surface were followed in situ by using optical reflectometry in a stagnation point flow setup. Conversion of the reflectometric signal to the surface coverage could be performed using a homogeneous slab model which was verified by determining the particle density on SEM pictures taken in the stagnation point and by comparison with a model which includes the particulate nature of the layer explicitly. The effects of salt concentration on the plateau adsorbed amounts for all particle sizes can be described with an effective hard sphere concept. Although initial slopes and plateau values are in reasonable agreement with a random sequential adsorption model, this model does not accurately describe the evolution of the surface coverage as a function of time in a stagnation point flow system. Copyright 1998 Academic Press. Copyright 1998Academic Press
在驻点流动装置中，通过光学反射法原位跟踪纳米二氧化硅颗粒在聚合物预处理表面上的吸附动力学。反射信号到表面覆盖率的转换可使用均匀平板模型进行，该模型通过确定驻点处扫描电子显微镜照片上的颗粒密度以及与明确包含层颗粒性质的模型进行比较得到验证。盐浓度对所有粒径颗粒的平台吸附量的影响可用有效硬球概念来描述。尽管初始斜率和平台值与随机顺序吸附模型合理一致，但该模型不能准确描述驻点流动系统中表面覆盖率随时间的变化。版权所有1998年学术出版社。版权所有1998年学术出版社
