FERROGEL - A NEW MAGNETO-CONTROLLED ELASTIC MEDIUM

Authors
ZRINYI M BARSI L BUKI A
Citation
M. Zrinyi et al., FERROGEL - A NEW MAGNETO-CONTROLLED ELASTIC MEDIUM, Polymer gels and networks, 5(5), 1997, pp. 415-427
Citations number
16
Journal title
Polymer gels and networks → ACNP
ISSN journal
09667822
Volume
5
Issue
5
Year of publication
1997
Pages
415 - 427
Database
ISI
SICI code
0966-7822(1997)5:5<415:F-ANME>2.0.ZU;2-V
Abstract
Magnetic-field-sensitive gels, called ferrogels, have been prepared by introducing monodomain, magnetite particles of colloidal size into ch emically crosslinked poly(vinyl alcohol) hydrogels. The influence of a non-uniform external magnetic field on the shape of gel tubes and the possibility to induce elongation and contraction by means of a magnet ic field gradient produced by an electromagnet have been demonstrated. It was shown that both the concentration of magnetite particles and t he crosslinking density of the ferrogels play an essential role in the magneto-elastic behaviour. (C) 1998 Elsevier Science Ltd. All rights reserved.