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Copolymer Networks From Oligo(epsilon-caprolactone) and n-Butyl Acrylate Enable a Reversible Bidirectional Shape-Memory Effect at Human Body Temperature

  • Exploiting the tremendous potential of the recently discovered reversible bidirectional shape-memory effect (rbSME) for biomedical applications requires switching temperatures in the physiological range. The recent strategy is based on the reduction of the melting temperature range (T-m) of the actuating oligo(epsilon-caprolactone) (OCL) domains in copolymer networks from OCL and n-butyl acrylate (BA), where the reversible effect can be adjusted to the human body temperature. In addition, it is investigated whether an rbSME in the temperature range close or even above T-m,T-offset (end of the melting transition) can be obtained. Two series of networks having mixtures of OCLs reveal broad T(m)s from 2 degrees C to 50 degrees C and from -10 degrees C to 37 degrees C, respectively. In cyclic, thermomechanical experiments the rbSME can be tailored to display pronounced actuation in a temperature interval between 20 degrees C and 37 degrees C. In this way, the application spectrum of the rbSME can be extended to biomedical applications.

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Metadaten
Author details:Mersa SaatchiORCiDGND, Marc BehlORCiDGND, Ulrich NöchelGND, Andreas LendleinORCiDGND
DOI:https://doi.org/10.1002/marc.201400729
ISSN:1022-1336
ISSN:1521-3927
Pubmed ID:https://pubmed.ncbi.nlm.nih.gov/25776303
Title of parent work (English):Macromolecular rapid communications
Publisher:Wiley-VCH
Place of publishing:Weinheim
Publication type:Article
Language:English
Year of first publication:2015
Publication year:2015
Release date:2017/03/27
Tag:body temperature; broad melting temperature range; copolymer networks; orientational memory; reversible bidirectional shape-memory polymer
Volume:36
Issue:10
Number of pages:5
First page:880
Last Page:884
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Peer review:Referiert
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