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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Upcycling Recycled Epoxy-Based Vitrimer for Enhancing Toughness of Poly(ethylene terephthalate)
TL;DR: In this paper , a series of polyethylene terephthalate (PET)-based copolymers containing various amounts of added vitrimer as the toughness modifier were synthesized by melt polymerization.
Journal ArticleDOI
Diels–Alder crosslinked telechelic poly(caprolactone-thiourethane)s with self-healing of macro-damages
H. Dang,Thuy Thu Truong,Anh Duc Song Nguyen,Ly Mai Thi Nguyen,Ha Tran Nguyen,Thiet Quoc Nguyen,Tien Minh Huynh,Ngan Nguyen Le,Tin Chanh Duc Doan,Chien Mau Dang,Le Hoang Sinh,Nguyen Dang Luong,Seppälä Jukka,Le-Thu T. Nguyen +13 more
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Hybrid Monomer Design Synergizing Property Trade‐offs in Developing Polymers for Circularity and Performance
TL;DR: In this article , the authors highlight the emerging hybrid monomer design strategy to develop intrinsically circular polymers with tunable performance properties, aiming to unify desired, but otherwise conflicting, properties in a single monomer.
Journal ArticleDOI
Blocked Phosphates as Photolatent Catalysts for Dynamic Photopolymer Networks
TL;DR: In this article , a temperature resistant (>200 °C) organic phosphate with a photolabile o-nitrobenzyl protecting group that can be cleaved by UV light is synthesized.
Journal ArticleDOI
Study on synthesis and mechanical properties of Eu 3+ ‐π/covalent hybrid crosslinked silicone rubber
TL;DR: In this article , the influence of the reversibility of Eu3+-π interaction on the static and dynamic mechanical behaviors of silicone rubber was studied, and the results showed that the elongation at break of cationic-π/covalent hybrid crosslinked silicone rubber increases by more than 60% compared with pure covalent crosslinked rubber when the breaking energy reaches the maximum.
References
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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.