Clustering properties of partly charged superfine particles in a light medium  

作　　者：Jing Sheng Li Juan Wang Qin Shen 

机构地区：[1]School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xue Fu Road, Zhenjiang 212013, China

出　　处：《Chinese Chemical Letters》2007年第11期1419-1422,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50474037);The Natural Science Funds(No.KB2006078)in Jiangsu Province of China.

摘　　要：This paper investigated average cluster sizes （ACS） and cluster size distributions （CSD） at different shear rates by Brownian dynamics in non-, bi-, and uni-polar systems with partly charged superfine particles, The investigation indicates that clusters in non- polar systems are the weakest and easiest to be damaged by increasing shear stresses; charged particles play important and different roles： in bi-polar system, it intends to strengthen clusters to some extent provided that the sign-like ions homogeneously arranged; in uni-polar system charged particles cracked the clusters into smaller ones, but the small clusters are strong to stand with larger shear stress. The relationship between ACS and shear rates follows power law with exponents in a range 0.18-0.28, these values are in a good agreement with experiment range but at the lower limit compared with other systems of non-metallic cluster particles.This paper investigated average cluster sizes （ACS） and cluster size distributions （CSD） at different shear rates by Brownian dynamics in non-, bi-, and uni-polar systems with partly charged superfine particles, The investigation indicates that clusters in non- polar systems are the weakest and easiest to be damaged by increasing shear stresses; charged particles play important and different roles： in bi-polar system, it intends to strengthen clusters to some extent provided that the sign-like ions homogeneously arranged; in uni-polar system charged particles cracked the clusters into smaller ones, but the small clusters are strong to stand with larger shear stress. The relationship between ACS and shear rates follows power law with exponents in a range 0.18-0.28, these values are in a good agreement with experiment range but at the lower limit compared with other systems of non-metallic cluster particles.

关 键 词：Partly charged particles Average cluster sizes Cluster size distributions 

分 类 号：O6-0[理学—化学]