Multidomain iron nanoparticles for the preparation of polyacrylamide ferrogels / Shankar Ajay,Safronov Alexander P.,Mikhnevich Ekaterina A.,Beketov Igor V. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2017. - V. 431, l. . - P. 134-137.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article; Proceedings Paper

Abstract:

Ferrogels (FG) based on poly(acrylamide) (PAAm) with embedded multidomain iron magnetic nanoparticles (MNPs) were synthesized by radical polymerization in water. Iron MNPs prepared by the electrical explosion of wire were spherical in shape and have an average diameter around 100 nm. MNPs were modified by a surfactant oleic acid to improve their dispersion in water. DLVO theoretical consideration was done to understand the stability of dispersions. By microcalorimetry it was shown that the oleic layer on the surface of MNPs prevents their interaction with PAAm network of FG. Mechanical testing of the compression modulus and the deformation of FGs in magnetic field show up their prospectiveness as a material for magnetically sensitive MEMS and actuators. (C) 2016 Elsevier B.V. All rights reserved.

Author keywords:

Iron nanoparticles; Extended DLVO theory; Poly(acrylamide); Ferrogels; Magnetodeformation; Interfacial interaction MAGNETIC-FIELD

DOI:

10.1016/j.jmmm.2016.08.075

Web of Science ID:

ISI:000399598600034

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN 1
Note	14th International Conference on Magnetic Fluids (ICMF), Ekaterinburg, RUSSIA, JUL 04-08, 2016
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Keywords-Plus	MAGNETIC-FIELD
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	ashankar@urfu.ru
ORCID-Numbers	Shankar, Ajay/0000-0002-8483-9377
Funding-Acknowledgement	Russian Science Foundation, Russia project {[}14-19-00989]
Funding-Text	The work was supported by the Russian Science Foundation, Russia project no. 14-19-00989. Authors thank Dr. Andrey Galyas for bright field optical measurements.
Number-of-Cited-References	13
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	4
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	ES5QV