From heterocoagulated colloids to core-shell particles

被引：33

作者：

Li, H ^{[1
]}

Han, J ^{[1
]}

Panioukhine, A ^{[1
]}

Kumacheva, E ^{[1
]}

机构：

[1] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2002年 / 255卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

polymer colloids; heterocoagulation; core-shell particles; conductive polymers; silica; titanyl sulfate; spreading;

D O I：

10.1006/jcis.2002.8632

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：

Heterocoagulation of large and small oppositely charged colloid particles, accompanied by spreading of small beads over the surface of large spheres, offers a promising alternative to synthesis of core-shell particles via interfacial polymerization. In this paper, conditions required for complete spreading of the shell-forming polymer over the surface of the core-forming material (CFM) are predicted in terms of a critical distance, x(cr), between the small particles on the surface of the CFM. The theoretical value of x(cr) is tested in experiments conducted for polypyrrole/polyacrylic and silica-titanyl sulfate/polyacrylic heterocoagulate units. (C) 2002 Elsevier Science (USA).

引用

页码：119 / 128

页数：10

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