The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Catalyst-Free Thermoset Polyurethane with Permanent Shape Reconfigurability and Highly Tunable Triple-Shape Memory Performance
Abstract
Thermoset shape memory polymer (SMP) with dynamic covalent bonds in the network is a new class of SMPs for which the permanent shape can be reconfigured via topological rearrangement (plasticity). Catalyzed transcarbamoylation has recently been established as an effective exchange reaction for plasticity in cross-linked polyurethane networks. However, ensuring the plasticity severely constrains the network design which adversely affects the ability to tune other classical shape memory properties for practical applications. Facing this new challenge, we design an amorphous polyurethane system for which the cross-linking density can be adjusted in a wide range. We discovered that the use of an aromatic diisocyanate in the synthesis of the polyurethanes facilitates achieving plasticity without requiring any catalyst. The overall network design leads to tunable recovery stress and shape memory transition temperatures without sacrificing the plasticity. The versatility of our polyurethane SMP is further reflected in its triple-shape memory performance. We anticipate that our tunable polyurethanes will benefit a variety of potential SMP device applications.
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“Such an approach has been largely employed to achieve multiple-way SMPs with a broad glass transition [82-92] and a broad melting transition [93-95] as the switching transition.”
From Two-Way and Multiple-Way Shape Memory Polymers for Soft Robotics: An Overview (2020) · cites this paper as [91]
In the citing paper
“With the introduction of dynamic covalent bonds into the polymer network, the permanent shape of traditional thermoset SMPs can be reconfigured (23, 24).”
From Climbing-inspired twining electrodes using shape memory for peripheral nerve stimulation and recording (2019) · cites this paper as [24]
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Metadata
- Authors
- Zheng, N., Hou, J., Xu, Y., Fang, Z., Zou, W., Zhao, Q., & Xie, T.
- Affiliations
- State Key Laboratory of Chemical Engineering (CN)
- Corresponding author
- Zhao, Qian
- Xie, Tao
- Venue
- ACS Macro Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-03-15
- Volume
- 6
- Issue
- 4
- Pages
- 326-330
- ISSN
- 2161-1653 (ISSN-L)
- OpenAlex
- W2598842450
- Cited by
- 237
- References
- 32
- Citations by year
- 2026: 10 · 2025: 12 · 2024: 21 · 2023: 20 · 2022: 32 · 2021: 31 · 2020: 32 · 2019: 45 · 2018: 24 · 2017: 10
- FWCI
- 17.37
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Macro Letters (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Science and Technology of the People's Republic of China (2015CB351903)
- National Natural Science Foundation of China (21474084, 21474090, 21625402)
- Central Committee of the Communist Party of China
- 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 › Biomaterials › Hydrogels: synthesis, properties, applications
- Keywords
- thermoset polyurethane, shape memory polymers, dynamic covalent bonds, plasticity, aromatic diisocyanates, crosslink density, recovery stress
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