Optical, magnetic and dielectric properties of non-liquid crystalline elastomers doped with magnetic colloids

A. M Figueiredo Neto, M. H. Godinho, T. Tóth-Katona, P. Palffy-Muhoray

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Magnetic nanoparticles from magnetic colloidal suspensions were incorporated in the urethane/urea elastomer (PU/PBDO) by swelling fully crosslinked elastomer samples with a toluene and ferrofluid mixture. It is shown that ferrofluid grains can be efficiently incorporated into the matrix of elastomers. The dependence of the birefringence of both the pure and ferrofluid-doped elastomer samples on strain is linear. The ratio of birefringence to strain of the ferrofluid-doped samples is greater than that of the pure elastomer samples, indicating that ferrofluid grains are oriented by the strained polymer network. We propose that this strain-induced orientation is due to the shape anisotropy of the nanoparticles.

Original languageEnglish
Pages (from-to)184-189
Number of pages6
JournalBrazilian Journal of Physics
Volume35
Issue number1
Publication statusPublished - Mar 2005

Fingerprint

ferrofluids
elastomers
colloids
dielectric properties
magnetic properties
optical properties
birefringence
nanoparticles
urethanes
ureas
swelling
toluene
anisotropy
polymers
matrices

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Optical, magnetic and dielectric properties of non-liquid crystalline elastomers doped with magnetic colloids. / Neto, A. M Figueiredo; Godinho, M. H.; Tóth-Katona, T.; Palffy-Muhoray, P.

In: Brazilian Journal of Physics, Vol. 35, No. 1, 03.2005, p. 184-189.

Research output: Contribution to journalArticle

Neto, A. M Figueiredo ; Godinho, M. H. ; Tóth-Katona, T. ; Palffy-Muhoray, P. / Optical, magnetic and dielectric properties of non-liquid crystalline elastomers doped with magnetic colloids. In: Brazilian Journal of Physics. 2005 ; Vol. 35, No. 1. pp. 184-189.
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