Journal ArticleDOI
Self-healing and thermoreversible rubber from supramolecular assembly
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TLDR
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.Abstract:
Rubbers exhibit enormous extensibility up to several hundred per cent, compared with a few per cent for ordinary solids, and have the ability to recover their original shape and dimensions on release of stress. Rubber elasticity is a property of macromolecules that are either covalently cross-linked or connected in a network by physical associations such as small glassy or crystalline domains, ionic aggregates or multiple hydrogen bonds. Covalent cross-links or strong physical associations prevent flow and creep. Here we design and synthesize molecules that associate together to form both chains and cross-links via hydrogen bonds. The system shows recoverable extensibility up to several hundred per cent and little creep under load. In striking contrast to conventional cross-linked or thermoreversible rubbers made of macromolecules, these systems, when broken or cut, can be simply repaired by bringing together fractured surfaces to self-heal at room temperature. Repaired samples recuperate their enormous extensibility. The process of breaking and healing can be repeated many times. These materials can be easily processed, re-used and recycled. Their unique self-repairing properties, the simplicity of their synthesis, their availability from renewable resources and the low cost of raw ingredients (fatty acids and urea) bode well for future applications.read more
Citations
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Journal ArticleDOI
Super Tough and Self-Healable Poly(dimethylsiloxane) Elastomer via Hydrogen Bonding Association and Its Applications as Triboelectric Nanogenerators.
Haiming Chen,J. Justin Koh,J. Justin Koh,Mengmeng Liu,Pengju Li,Xiaotong Fan,Siqi Liu,Jayven Chee Chuan Yeo,Yu Jun Tan,Benjamin C. K. Tee,Chaobin He,Chaobin He +11 more
TL;DR: A strategy that combined the advantages of the dynamic of hierarchical hydrogen bonding and phase-separation-like structure was adopted to improve the toughness of PDMS elastomers and a tough, self-healable and transparent triboelectric nanogenerator was constructed.
Journal ArticleDOI
Smart composite materials for self-sensing and self-healing
T.J. Swait,Abdul Rauf,R Grainger,Peter Bradby Spiros Bailey,Austin D. Lafferty,Elliot J. Fleet,Russell J. Hand,Simon A. Hayes +7 more
TL;DR: In this article, various methods of self-sensing and self-healing developed within the Composite Systems Innovation Centre, University of Sheffield, are reviewed, including damage sensing using electrical resistance in carbon fiber reinforced composite or using the fibres as optical sensing elements in glass fibre reinforced composite.
Journal ArticleDOI
Host-guest-driven copolymerization of tetraphosphonate cavitands.
Francesca Tancini,Roger M. Yebeutchou,Laura Pirondini,Rita De Zorzi,Silvano Geremia,Oren A. Scherman,Enrico Dalcanale +6 more
TL;DR: The outstanding complexing properties of tetraphosphonate cavitands towards N-methylpyridinium salts were exploited to realise a new class of linear and cyclic AABB supramolecular polymers through host-guest interactions.
Journal ArticleDOI
Hydrogen‐bonded supramolecular polyurethanes
Kelly A. Houton,Andrew J. Wilson +1 more
TL;DR: In this paper, the authors describe the self-assembly of polyurethane-based supramolecular materials and present a method to select specific building blocks with well-understood non-covalent chemistry from an established toolkit.
References
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MonographDOI
Supramolecular Chemistry: Concepts and Perspectives
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Journal ArticleDOI
Reversible Polymers Formed from Self-Complementary Monomers Using Quadruple Hydrogen Bonding
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Journal ArticleDOI
Reptation of living polymers: dynamics of entangled polymers in the presence of reversible chain-scission reactions
TL;DR: Etude theorique de la dynamique de the relaxation de contrainte dans un systeme dense de polymeres vivants as mentioned in this paper, e.g.
Journal ArticleDOI
Molecular recognition directed self-assembly of supramolecular liquid crystalline polymers from complementary chiral components
Journal ArticleDOI
Dynamics of Entangled Solutions of Associating Polymers
Michael Rubinstein,A. N. Semenov +1 more
TL;DR: In this article, the authors developed a theory of "sticky reptation" to model the dynamics of entangled solutions of associating polymers with many stickers per chain, which predicts a very strong concentration dependence of viscosity in good agr...