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Mechanical Properties of Polymer Blends Having Shape-memory Capability

Published online by Cambridge University Press:  31 January 2011

Marc Behl ,
Ute Ridder ,
Wolfgang Wagermaier ,
Steffen Kelch  and
Andreas Lendlein
Marc Behl
Affiliation:
marc.behl@gkss.de, GKSS Research Centre Geesthacht GmbH, Institute of Polymer Research, Kantstr. 55, Teltow, 14513, Germany, +(49)3328352229, +(49)3328352452
Ute Ridder
Affiliation:
Ute.Ridder@Freudenberg.de, Freudenberg Forschungsdienste KG, Weinheim, Germany
Wolfgang Wagermaier
Affiliation:
wolfgang.wagermaier@gkss.de, GKSS Research Center, Center for Biomaterial Development, Institute of Polymer Research, Teltow, Germany
Steffen Kelch
Affiliation:
Kelch.Steffen@ch.sika.com, Sika Technology AG, Zurich, Switzerland
Andreas Lendlein
Affiliation:
lendlein@online.de, United States
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Abstract

The general design principle of shape-memory polymers (SMP) requires two key compo-nents: covalent or physical crosslinks (hard domains) determining the permanent shape and switching domains fixing the temporary shape as well as influencing the switching temperature Tsw. In conventional thermoplastic SMP hard and switching domains determining segments are combined in one macromolecule, e.g. block copolymers such as polyurethanes. Recently, binary polymer blends having shape-memory properties, from two different multiblock copolymers have been presented, whereby the first one is providing the segments forming hard domains and the second one the segments forming the switching domains. Besides the shape-memory proper-ties, the mechanical properties of such materials are application relevant. Here we investigate how the blend composition influences mechanical properties of this new class of shape-memory materials.

Keywords

polymermemorysecond phases
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1190: Symposium NN – Active Polymers , 2009 , 1190-NN01-05
Copyright
Copyright © Materials Research Society 2009

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References

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