Reversible Shape Memory Polymer from Semicrystalline Poly(ethylene-co-vinyl acetate) with Dynamic Covalent Polymer Networks
Abstract
This work reports the reversible shape memory polymer (RSMP) by semicrystalline poly(ethylene- co -vinyl acetate) (PEVA) with dynamic covalent polymer networks. The ester linkages in the cross-linked PEVA acted as dynamic covalent bonds in the presence of a transesterification catalyst. This dynamic covalent network imparted the material with good thermal plasticity in a non-flow state at high temperature. The resulting PEVA possessed both the reversible shape memory effect (RSME) and thermadapt property. The thermadapt performance gave little adverse effect on the RSME. This work provides an approach to improve the reprocessability/recyclability of thermoset RSMPs through simple modification of commercially available polymers.
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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 [135]
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Multiple and two-way reversible shape memory polymers: Design strategies and applications
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- Authors
- Gao, Y., Liu, W., & Zhu, S.
- Affiliations
- McMaster University (CA)
- South China University of Technology (CN)
- Chinese University of Hong Kong (HK)
- Corresponding author
- Liu, Weifeng
- Zhu, Shiping
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-10-31
- Volume
- 51
- Issue
- 21
- Pages
- 8956-8963
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2899265110
- Cited by
- 94
- References
- 44
- Citations by year
- 2026: 7 · 2025: 7 · 2024: 8 · 2023: 10 · 2022: 19 · 2021: 20 · 2020: 16 · 2019: 7
- FWCI
- 5.37
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecules (publishedVersion)
- Funders
- Canada Research Chairs
- Natural Sciences and Engineering Research Council of Canada
- 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
- ethylene-vinyl acetate copolymer, semicrystalline polymers, dynamic covalent bonds, ester linkage, transesterification, thermal plasticity, reprocessability
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