Sedimentation of fine colloidal particles adsorbed onto a long polymer chain

被引：4

作者：

Nowicki, W

Nowicka, G

机构：

[1] Department of Physical Chemistry, Faculty of Chemistry, A. Mickiewicz University, 60-780 Poznań

来源：

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 1997年 / 75卷 / 09期

关键词：

high polymers; fine colloidal particles; sedimentation; diffusion; flocculation; stabilization of suspensions;

D O I：

10.1139/v97-151

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A system containing aggregates composed of several fine colloidal particles attached to a single very long polymer molecule is considered. It is shown that the sedimentation equilibrium of the system depends on the extent of restriction over the Brownian motions of particles. On the basis of analysis of sedimentation equilibrium, a simple stability model for such systems is developed. The model elucidates the deterioration of the ability of ultralarge polymers to flocculate fine suspensions.

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页码：1248 / 1255

页数：8

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