Issue 4, 2009
From the journal:

Journal of Materials Chemistry

Magnetoactive liquid crystal elastomer nanocomposites

Andreas Kaiser,a   Moritz Winkler,a   Simon Krause,b   Heino Finkelmannb  and  Annette M. Schmidt*a  

* Corresponding authors

a Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, Düsseldorf, Germany
E-mail: schmidt.annette@uni-duesseldorf.de
Fax: +49 211 8115840
Tel: +49 211 8114820

b Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Str. 31, Freiburg, Germany
E-mail: heino.finkelmann@makro.uni-freiburg.de
Fax: +49 761 2036306
Tel: +49 761 2036271

Abstract

We present liquid crystal elastomer (LCE) nanocomposites containing superparamagnetic nanoparticles that perform local heat dissipation upon irradiation with electromagnetic fields. A fast local temperature rise is observed that leads to a distinct contraction at the nematic–isotropic transition temperature of the elastomer. The materials exhibit contractions up to 27% of the original length with short response times. We found the heat production rate and the heat transfer coefficient the parameters that determine the maximum contraction rate.

Graphical abstract: Magnetoactive liquid crystal elastomer nanocomposites

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Article information

DOI
https://doi.org/10.1039/B813120C
Article type
Paper
Submitted
29 Jul 2008
Accepted
28 Oct 2008
First published
10 Dec 2008

J. Mater. Chem., 2009,19, 538-543

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Magnetoactive liquid crystal elastomer nanocomposites

A. Kaiser, M. Winkler, S. Krause, H. Finkelmann and A. M. Schmidt, J. Mater. Chem., 2009, 19, 538 DOI: 10.1039/B813120C

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