Sterically stabilized water based magnetic fluids:: Synthesis, structure and properties

被引：188

作者：

Bica, Doina

Vekas, Ladislau

Avdeev, Mikhail V.

Marinica, Oana

Socoliuc, Vlad

Balasoiu, Maria

Garamus, Vasil M.

机构：

[1] Acad Romana, Timisoara Div, Ctr Fundamental & Adv Tech Res, Lab Magnet Fluids, Timisoara 300223, Romania

[2] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna, Russia

[3] Univ Politehn Timisoara, Natl Ctr Engn Syst & Complex Fluids, Timisoara 3000222, Romania

[4] Natl Inst R&D Electrochem & Condensed Matter, Timisoara 300588, Romania

[5] GKSS Forschungszentrum Geesthacht GmbH, Geesthacht, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 311卷 / 01期

关键词：

magnetic fluids; water carrier; magnetite nanoparticles; superparamagnetic particles; steric stabilization; light scattering; small angle neutron scattering; colloidal stability; magnetorheological behavior; biocompatible nanofluids;

D O I：

10.1016/j.jmmm.2006.11.158

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic fluids (MFs), prepared by chemical co-precipitation followed by double layer steric and electrostatic (combined) stabilization of magnetite nanoparticles dispersed in water, are presented. Several combinations of surfactants with different chain lengths (lauric acid (LA), myristic acid (MA), oleic acid (OA) and dodecyl-benzene-sulphonic acid (DBS)) were used, such as LA + LA, MA + MA, LA + DBS, MA + DBS, OA + DBS, OA + OA and DBS + DBS. Static light scattering, transmission electron microscopy, small angle neutron scattering, magnetic and magneto-rheological measurements revealed that MFs with MA + MA or LA + LA biocompatible double layer covered magnetite nanoparticles are the most stable colloidal systems among the investigated samples, and thus suitable for biomedical applications. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：17 / 21

页数：5

共 19 条

[1]

[Anonymous], ROMANIAN REPORTS PHY

[2] Comparative analysis of the structure of sterically stabilized ferrofluids on polar carriers by small-angle neutron scattering [J].