Cited by 61Polymer composites and self-healingPolymer crystallization and propertiesAdvanced Materials and Mechanics

Reversible shape-memory effect in cross-linked linear poly(ε-caprolactone) under stress and stress-free conditions

Dolynchuk, Oleksandr, Kolesov, Igor, Jehnichen, Dieter, Reuter, Uta, Radusch, Hans-Joachim, Sommer, Jens-Uwe·2017·Macromolecules

Abstract

The effect of cross-link density on the reversible shape-memory effect (SME) under constant load was systematically studied in cross-linked linear poly(ε-caprolactone) (PCL). A remarkable reversible SME under stress-free conditions was observed in PCL with the highest achieved cross-link density. Thermal properties as well as morphology, size, and orientation of the nanocrystalline structure formed in covalent networks of PCL under load were compared with those in PCL crystallized under stress-free conditions. As shown, the oriented growth of crystals is the origin of both the reversible SME under and without load. Furthermore, a significant rise of crystallinity and crystal thickness was detected in PCL crystallized under constant load. The fitting curves of the temperature-dependent strain as well as the quantities of crystallinity, type of crystalline structure, size, and orientation of the crystals got by modeling the reversible SME in PCL under stress well correspond to their values obtained experimentally.

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Crossref · 10.1021/acs.macromol.7b00481

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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.”

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Authors
Dolynchuk, O., Kolesov, I., Jehnichen, D., Reuter, U., Radusch, H.-J., & Sommer, J.-U.
Affiliations
  • Leibniz Institute of Polymer Research (DE)
  • Polymer Service GmbH Merseburg, D-06217 Merseburg, Germany
Corresponding author
  • Dolynchuk, Oleksandr
  • Kolesov, Igor
Venue
Macromolecules
Published
2017-05-05
Volume
50
Issue
10
Pages
3841-3854
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
OpenAlex
W2610870129
Cited by
61
References
59
Citations by year
2026: 3 · 2025: 8 · 2024: 7 · 2023: 5 · 2022: 9 · 2021: 4 · 2020: 7 · 2019: 10 · 2018: 7 · 2017: 1
FWCI
3.91
Type
journal article
Language
en
Open access
closed
Locations
Macromolecules (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
polycaprolactone, polymer networks, crosslink density, nanocrystal orientation, crystallinity, crystal thickness, covalent networks

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