Structural characterization of concentrated aqueous ferrofluids

被引：22

作者：

Nagornyi, A., V ^{[1
,2
]}

Socoliuc, V ^{[3
]}

Petrenko, V., I ^{[1
,4
,5
]}

Almasy, L. ^{[6
,7
]}

Ivankov, O. I. ^{[1
,8
,9
]}

Avdeev, M., V ^{[1
]}

Bulavin, L. A. ^{[2
]}

Vekas, L. ^{[3
,10
]}

机构：

[1] Joint Inst Nucl Res, Dubna, Russia

[2] Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine

[3] Romanian Acad, Ctr Fundamental & Adv Tech Res, Timisoara Branch, Timisoara, Romania

[4] Basque Ctr Mat Applicat & Nanostruct, BCMat, UPV EHU Sci Pk, Leioa, Spain

[5] Basque Fdn Sci, Ikerbasque, Bilbao, Spain

[6] Wigner Res Ctr Phys, Neutron Spect Dept, Budapest, Hungary

[7] Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang, Sichuan, Peoples R China

[8] Ukrainian NAS, Inst Safety Problems Nucl Power Plants, Kiev, Ukraine

[9] Moscow Inst Phys & Technol, Dolgoprudnyi, Russia

[10] Politehn Univ Timisoara, Res Ctr Complex Fluids Syst Engn, Timisoara, Romania

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 501卷

关键词：

Magnetic fluids; Aqueous ferrofluids; Aggregate; Small-angle neutron scattering; STABILITY; DILUTION;

D O I：

10.1016/j.jmmm.2020.166445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structure characterizations of concentrated water-based magnetic fluids stabilized by oleic and lauric acids were done by means of small-angle neutron scattering (SANS) and complemented by dynamic light scattering and magnetization analysis. Stability of ferrofluids with time against sedimentation was concluded despite the presence of aggregates in solutions. Differences in the average sizes of individual polydisperse magnetite nanoparticles coated with surfactants and their aggregates were revealed. Structural parameters obtained from SANS have been confirmed by magnetogranulometry data. The comparative analysis of the aggregation and its change upon dilution is made basing on the data of SANS and dynamic light scattering techniques.

引用

页数：5

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