Cited by 251Polymer composites and self-healingAdvanced Materials and MechanicsEpoxy Resin Curing Processes

Revealing triple-shape memory effect by polymer bilayers

Xie, Tao, Xiao, Xingcheng, Cheng, Yang‐Tse·2009·Macromolecular Rapid Communications

Abstract

Bilayer polymers that consist of two epoxy dual-shape memory polymers of well-separated glass transition temperatures have been synthesized. These bilayer epoxy samples exhibit a triple-shape memory effect (TSME) with shape fixities tailorable by changing the ratio between the two layers. The triple-shape fixities of the bilayer epoxy polymers can be explained by the balance of stress between the two layers. Based on this work, it is believed that the following three molecular design criterions should be considered in designing triple-shape memory polymers with optimum TSME: 1) well-separated thermal transitions, 2) a strong interface, and 3) an appropriate balance of moduli and relative ratios between the layers (or microphases).

Integrity signals

Registry

Crossref · 10.1002/marc.200900409

Cites

19 of 19 references verified0 citation errors · 0 not checkable

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  • Alternative methods for creating multiple, well-separated switching transitions in one system consist of laminating two SMPs with well-separated transition temperatures or developing hybrid SMPs with multiple thermal transitions.

    “Alternative methods for creating multiple, well-separated switching transitions in one system consist of laminating two SMPs which have well-separated transition temperatures [76,77] or of developing hybrid SMPs with multiple thermal transitions [78-81].”
  • A layered shape memory epoxy with high Tg and low Tg layers has a strong interface due to reaction among residual epoxy or amine groups on the surface of the two layers.

    “The two layers of epoxy have a strong interface as a result of the reaction among the residual epoxy or amine groups on the surface of the two layers.”
  • Xie et al. obtained t-SME through macroscopic bilayer cross-linked polymer structures, where each epoxy layer possessed dual-SME with good Rf and Rr.

    “In 2009 Xie et al. proposed a new approach in the t-SMP architecture by combining two microscopic phases. They obtained the t-SME through macroscopic bilayer cross-linked polymer structures, where each epoxy layer possessed dual-SME with good Rf and Rr [72].”
  • The fixation of shapes (B) and (C) was strongly correlated to the ratio between the two layers, yielding fixity ratios varying from 70% to 97%.

    “The fixation of the shapes [(B) and (C)] was strongly correlated to the ratio between the two layers (yielding fixity ratios varying from 70% to 97%).”
  • The phase transitions of each layer were well-separated (38 °C and 75 °C, respectively).

    “The phase transitions of each layer were well-separated (38 ° C and 75 ° C, respectively).”

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Authors
Xie, T., Xiao, X., & Cheng, Y.
Affiliations
  • General Motors (United States) (US)
  • University of Kentucky (US)
Corresponding author
Xie, Tao
Venue
Macromolecular Rapid Communications
Publisher
Wiley
Published
2009-10-28
Volume
30
Issue
21
Pages
1823-1827
ISSN
  • 1022-1336 (ISSN-L)
  • 1521-3927
OpenAlex
W2147919058
Cited by
251
References
20
Citations by year
2026: 4 · 2025: 5 · 2024: 2 · 2023: 9 · 2022: 10 · 2021: 18 · 2020: 16 · 2019: 22 · 2018: 10 · 2017: 24 · 2016: 17 · 2015: 22 · 2014: 16 · 2013: 21 · 2012: 22
FWCI
15.15
Type
journal article
Language
en
Open access
closed
Locations
  • Macromolecular Rapid Communications (publishedVersion)
  • PubMed (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 › Engineering › Mechanical Engineering › Epoxy Resin Curing Processes
Keywords
triple shape memory effect, epoxy polymers, shape fixity, polymer interfaces, microphase separation

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