Journal ArticleDOI
Dynamic Covalent Polymer Networks: from Old Chemistry to Modern Day Innovations.
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TLDR
This work designs dynamic covalent polymer networks with unique adaptive properties for vitrimeric rheological behavior and solid-state plasticity for this type of material, and suggests a promising future for this class of materials.Abstract:
Dynamic covalent polymer networks have long been recognized. With the initial focus on the unintended impact of dynamic covalent linkages on the viscoelasticity of commercial rubbers, efforts in modern times have transitioned into designing dynamic covalent polymer networks with unique adaptive properties. Whereas self-healing and thermoset reprocessing have been the primary motivations for studying dynamic covalent polymer networks, the recent discovery of the vitrimeric rheological behavior and solid-state plasticity for this type of material have opened up new opportunities in material innovations. This, coupled with the revelation of the dynamic characteristics of commercially relevant polymer building blocks such as esters and urethanes, suggests a promising future for this class of materials.read more
Citations
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Flexible Osteogenic Glue as an All-In-One Solution to Assist Fracture Fixation and Healing
Jincheng Tang,Kun Xi,Hao Chen,Lingjun Wang,Dongya Li,Yun Xu,Tianwen Xin,Liang Wu,Yidi Zhou,Jiang Bian,Zhengwei Cai,Huilin Yang,Lianfu Deng,Yong Gu,Wenguo Cui,Liang Chen +15 more
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Medical application of biomimetic 4D printing
TL;DR: Recent advances on application of 4D printing for manufacturing of this type of materials and other high-performance biomaterials for medical applications have been discussed.
Journal ArticleDOI
Reconfigurable Poly(urea‐urethane) Thermoset Based on Hindered Urea Bonds with Triple‐Shape‐Memory Performance
TL;DR: In this paper, the ORCID identification number for the author(s) of this article can be found under https://doi.org/10.1002/macp.201900148.
Journal ArticleDOI
Rapid, Photomediated Healing of Hexaarylbiimidazole-Based Covalently Cross-Linked Gels
TL;DR: HABI functionalities are incorporated into the backbone of poly(ethylene glycol)-based polymeric gels to yield relatively low reactivity lophyl radicals under UV or visible light irradiation and which spontaneously recombine without significantly participating in deleterious side reactions.
Journal ArticleDOI
Dynamic Polymer Network System Mediated by Radically Exchangeable Covalent Bond and Carbolong Complex
Yuan Chen,Liulin Yang,Wei Zheng,Pufan Ouyang,Huan Zhang,Yonghong Ruan,Wengui Weng,Xumin He,Haiping Xia +8 more
TL;DR: A polyurethane elastomer with a dynamic covalent polymer network containing a radically exchange properties is reported, which is appealing to develop dynamic polymer systems with multifunctionl properties.
References
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Journal ArticleDOI
Autonomic healing of polymer composites
Scott R. White,Nancy R. Sottos,Philippe H. Geubelle,Jeffrey S. Moore,Jeffrey S. Moore,Michael R. Kessler,Suresh R. Sriram,Suresh R. Sriram,Eric Brown,S. Viswanathan +9 more
TL;DR: A structural polymeric material with the ability to autonomically heal cracks is reported, which incorporates a microencapsulated healing agent that is released upon crack intrusion and polymerization of the healing agent is triggered by contact with an embedded catalyst, bonding the crack faces.
Journal ArticleDOI
Controlled/living radical polymerization: Features, developments, and perspectives
TL;DR: In this article, a review of recent mechanistic developments in the field of controlled/living radical polymerization (CRP) is presented, with particular emphasis on structure-reactivity correlations and "rules" for catalyst selection in ATRP, for chain transfer agent selection in reversible addition-fragmentation chain transfer (RAFT) polymerization, and for the selection of an appropriate mediating agent in stable free radical polymerisation (SFRP), including organic and transition metal persistent radicals.
Journal ArticleDOI
Self-healing and thermoreversible rubber from supramolecular assembly
TL;DR: The design and synthesis of molecules that associate together to form both chains and cross-links via hydrogen bonds and the system shows recoverable extensibility up to several hundred per cent and little creep under load are designed and synthesized.
Journal ArticleDOI
A Thermally Re-mendable Cross-Linked Polymeric Material
Xiangxu Chen,Matheus Adrianus Dam,Kanji Ono,Ajit Mal,Hongbin Shen,Steven Nutt,Kevin Sheran,Fred Wudl +7 more
TL;DR: A transparent organic polymeric material that can repeatedly mend or “re-mend” itself under mild conditions and is a tough solid at room temperature and below with mechanical properties equaling those of commercial epoxy resins.
Journal ArticleDOI
Silica-Like Malleable Materials from Permanent Organic Networks
TL;DR: In this paper, the authors designed epoxy networks that can rearrange their topology by exchange reactions without depolymerization, and showed that they are insoluble and processable.