Cited by 78Polymer composites and self-healingAdvanced Materials and MechanicsBlock Copolymer Self-Assembly

Reversible Bidirectional Shape Memory Effect in Polyurethanes through Molecular Flipping

Biswas, Arpan, Aswal, Vinod K., Sastry, P. U., Rana, Dipak, Maiti, Pralay·2016·Macromolecules

Abstract

Reversible bidirectional shape memory is developed in thermoplastic polyurethane by designing different components to enable molecular switching from actuator domain to self-assembled rigid hard domain and vice versa under a temperature cycle. Polycaprolactone based special polyurethanes have been synthesized which exhibit appropriate self-assembly behavior suitable for the shape memory effect. Reversible bidirectional shape memory has been reported through induced strain and giving shape at particular temperature, and the results are compared with conventional polyurethanes which do not show any shape memory effect. The correlation between chemical structures, self-assembly, structural evolution, and shape memory effect has been made. Self-gripping is demonstrated revealing the novel mechanism of molecular flipping and temperature-induced structural change along with molecular aggregation.

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Crossref · 10.1021/acs.macromol.6b00536

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33 of 33 references verified0 citation errors · 0 not checkable

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  • Some thermoplastic polymers have been shown to feature the two-way SME under stress-free condition.

    “However, some thermoplastic polymers, i.e., class (iii), have been shown to feature the two-way SME under stress-free condition [142-146].”

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Authors
Biswas, A., Aswal, V. K., Sastry, P. U., Rana, D., & Maiti, P.
Affiliations
  • Indian Institute of Technology BHU (IN)
  • Bhabha Atomic Research Centre (IN)
  • University of Ottawa (CA)
Corresponding author
Maiti, Pralay
Venue
Macromolecules
Published
2016-06-30
Volume
49
Issue
13
Pages
4889-4897
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
OpenAlex
W2465346047
Cited by
78
References
33
Citations by year
2026: 1 · 2025: 6 · 2024: 4 · 2023: 5 · 2022: 7 · 2021: 8 · 2020: 12 · 2019: 14 · 2018: 14 · 2017: 6 · 2016: 1
FWCI
7.98
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 › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
Keywords
thermoplastic polyurethane, self-assembly, temperature-induced structural changes, molecular aggregation, induced strain

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