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Redox‐ and Glucose‐Induced Shape‐Memory Polymers

Redox‐ and Glucose‐Induced Shape‐Memory Polymers A novel redox‐induced shape‐memory polymer (SMP) is prepared by crosslinking β‐cyclodextrin modified chitosan (β‐CD‐CS) and ferrocene modified branched ethylene imine polymer (Fc‐PEI). The resulting β‐CD‐CS/Fc‐PEI contains two crosslinks: reversible redox‐sensitive β‐CD‐Fc inclusion complexes serving as reversible phases, and covalent crosslinks serving as fixing phases. It is shown that this material can be processed into temporary shapes as needed in the reduced state and recovers its initial shape after oxidation. The recovery ratio and the fixity ratio are both above 70%. Furthermore, after entrapping glucose oxidase (GOD) in the system, the material shows a shape memory effect in response to glucose. The recovery ratio and the fixity ratio are also above 70%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Macromolecular Rapid Communications Wiley

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References (24)

Publisher
Wiley
Copyright
Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1022-1336
eISSN
1521-3927
DOI
10.1002/marc.201300084
pmid
23564698
Publisher site
See Article on Publisher Site

Abstract

A novel redox‐induced shape‐memory polymer (SMP) is prepared by crosslinking β‐cyclodextrin modified chitosan (β‐CD‐CS) and ferrocene modified branched ethylene imine polymer (Fc‐PEI). The resulting β‐CD‐CS/Fc‐PEI contains two crosslinks: reversible redox‐sensitive β‐CD‐Fc inclusion complexes serving as reversible phases, and covalent crosslinks serving as fixing phases. It is shown that this material can be processed into temporary shapes as needed in the reduced state and recovers its initial shape after oxidation. The recovery ratio and the fixity ratio are both above 70%. Furthermore, after entrapping glucose oxidase (GOD) in the system, the material shows a shape memory effect in response to glucose. The recovery ratio and the fixity ratio are also above 70%.

Journal

Macromolecular Rapid CommunicationsWiley

Published: May 27, 2013

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