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Simulation of Colloidal Particles Aggregation in Presence of Diffuse Double Layer
Author(s): 
Pages: 33-37
Year: Issue:  1
Journal: JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES

Keyword:  扩散双电层扩散控制聚集(DLCA)分形维模拟;
Abstract: 在MATLAB平台上构建了纳米粒子聚集过程的模拟软件,基于扩散控制聚集模型,对扩散双电层作用下的聚集过程进行模拟.研究了双电层厚度为0、2、5倍粒径时的聚集速率和体系中的粒度分布,模拟显示聚集速率随着双电层厚度的增加而急剧下降,尺度与双电层厚度相当的团簇受双电层的影响最为显著.聚集体的分形维随双电层厚度增加而下降,说明单个粒子或者小团簇进入大团簇的内部变得困难.
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