THE EFFECT OF ADSORBED POLYMER MOLECULAR-WEIGHT ON MAGNETIC PARTICLE DISPERSIBILITY

被引：8

作者：

INOUE, H ^{[1
]}

FUKKE, H ^{[1
]}

KATSUMOTO, M ^{[1
]}

机构：

[1] HITACHI LTD,CENT RES LAB,KOKUBUNJI,TOKYO 185,JAPAN

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1992年 / 148卷 / 02期

关键词：

D O I：

10.1016/0021-9797(92)90188-R

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dispersibility of acicular magnetic particles which have an adsorbed epoxy resin layer around them is investigated. The relationship between resin molecular weight and adsorbed layer characteristics, e.g., adsorbed resin amount, adsorbed solvent amount, adsorbed layer thickness, is determined. A thick adsorbed layer which contains large amounts of solvent results from the large molecular weight of the epoxy resin. Such a thick adsorbed layer plays an important role in stabilizing dispersion because of its steric repulsion effect. This steric repulsion effect can be estimated by the interaction energy calculation between two particles. The resin molecular weight dependence of dispersibility can also be predicted by the calculation, which supports the experimental results. © 1992.

引用

页码：533 / 540

页数：8

共 15 条

[1] THEORY OF STABILIZATION OF SPHERICAL COLLOIDAL PARTICLES BY NONIONIC POLYMERS [J].