Cited by 157Polymer composites and self-healingAdvanced Materials and MechanicsPolymer crystallization and properties

Two-way reversible shape memory behaviour of crosslinked poly(ε-caprolactone)

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Pandini, S., Passera, S., Messori, M., Paderni, K., Toselli, M., Gianoncelli, A., Bontempi, E., Riccò, T.·2012·Polymer

Abstract

Abstract Polymers capable of reversible “two-way” shape memory behaviour are of great interest for applications where reversible actuation is demanded, and semicrystalline crosslinked systems have been indicated as an interesting solution towards this end. In this work we have explored the two-way shape memory response of semicrystalline poly(e-caprolactone)-based polymer networks, prepared with various macromolecular architectures starting from linear, three- and four-arm star poly(e-caprolactone) functionalized with methacrylate end-groups. All the materials have revealed two-way shape memory capabilities. The effect arises from an elongation process that takes place when the material is cooled under an applied load below the crystallization temperature, and that is completely reversed when heated again above melting temperature, in a manner that strongly depends on the applied load and on the material crosslink density. Two-dimensional XRD analysis, carried out on elongated specimens, shows that the elongation on cooling is accompanied by a change in the crystallinity orientation along the direction of stretch.

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Crossref · 10.1016/j.polymer.2012.02.053

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  • Permanent systems such as crosslinked semi-crystalline polymers, nematic liquid-crystalline elastomers, and glass-forming polydomain nematic networks open the door to the design of polymeric actuators.

    “It has been reported that permanent systems, such as crosslinked semi-crystalline polymers [84-86], nematic liquid-crystalline elastomers [87], and glass-forming polydomain nematic networks [88], open the door to the design of polymeric actuators.”

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Authors
Pandini, S., Passera, S., Messori, M., Paderni, K., Toselli, M., Gianoncelli, A., Bontempi, E., & Riccò, T.
Affiliations
  • National Interuniversity Consortium of Materials Science and Technology (IT)
  • University of Modena and Reggio Emilia (IT)
Corresponding author
Pandini, S.
Venue
Polymer
Publisher
Elsevier BV
Published
2012-04
Volume
53
Issue
9
Pages
1915-1924
ISSN
0032-3861 (ISSN-L)
OpenAlex
W2150902337
Cited by
157
References
46
Citations by year
2026: 7 · 2025: 3 · 2024: 5 · 2023: 4 · 2022: 11 · 2021: 6 · 2020: 11 · 2019: 16 · 2018: 15 · 2017: 11 · 2016: 17 · 2015: 15 · 2014: 19 · 2013: 15 · 2012: 2
FWCI
12.82
Type
journal article
Language
en
Open access
Locations
  • Polymer (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • Institutional Research Information System (Università degli Studi di Brescia) (submittedVersion)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by)
Funders
  • INSTM
  • Regione Lombardia
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
Keywords
two-way shape memory effect, polycaprolactone, crosslinked polymer networks, semicrystalline polymers, star polymers, crosslink density, reversible actuation, polymer crystallization

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