Copolymer Networks From Oligo(ε-caprolactone) and n-Butyl Acrylate Enable a Reversible Bidirectional Shape-Memory Effect at Human Body Temperature
Abstract
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 (ΔT m ) of the actuating oligo(ε-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 Tm,offset (end of the melting transition) can be obtained. Two series of networks having mixtures of OCLs reveal broad ΔTm s from 2 °C to 50 °C and from -10 °C to 37 °C, respectively. In cyclic, thermomechanical experiments the rbSME can be tailored to display pronounced actuation in a temperature interval between 20 °C and 37 °C. In this way, the application spectrum of the rbSME can be extended to biomedical applications.
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Contributions to stress-free two-way SMPs show the possibility of achieving complex reversible shape changes such as elongation/contraction, bending/unbending, and coiling/uncoiling, and of tuning the actuation temperature.
“Contributions to this class can be found, e.g., in [128-135], and show the possibility of achieving complex reversible shape changes (e.g., elongation/contraction, bending/unbending, coiling/uncoiling), and of tuning the actuation temperature.”
From Two-Way and Multiple-Way Shape Memory Polymers for Soft Robotics: An Overview (2020) · cites this paper as [130]
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- Authors
- Saatchi, M., Behl, M., Nöchel, U., & Lendlein, A.
- Affiliations
- Tianjin University (CN)
- Helmholtz-Zentrum Hereon (DE)
- Corresponding author
- Behl, Marc
- Lendlein, Andreas
- Venue
- Macromolecular Rapid Communications
- Publisher
- Wiley
- Published
- 2015-03-16
- Volume
- 36
- Issue
- 10
- Pages
- 880-884
- ISSN
- 1022-1336 (ISSN-L)
- OpenAlex
- W2061941235
- Cited by
- 81
- References
- 13
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 8 · 2023: 6 · 2022: 8 · 2021: 7 · 2020: 6 · 2019: 10 · 2018: 11 · 2017: 7 · 2016: 9 · 2015: 2 · 2014: 1
- FWCI
- 9.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecular Rapid Communications (publishedVersion)
- PubMed (publishedVersion)
- publish.UP (University of Potsdam) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Keywords
- butyl acrylate, copolymer networks, human body temperature, melting temperature range, thermomechanical actuation, biomedical applications, shape memory polymers
- MeSH terms
- Acrylates, Biocompatible Materials, Body Temperature, Caproates, Humans, Lactones, Materials Testing, Pliability, Human Body, Phase Transition
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