Thermally Triggered Injectable Underwater Adhesives
| Autor: | Mehdi Vahdati, Costantino Creton, Dominique Hourdet, Guylaine Ducouret |
|---|---|
| Přispěvatelé: | Sciences et Ingénierie de la Matière Molle (SIMM), ESPCI ParisTech-PSL Research University (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Sciences et Ingénierie de la Matière Molle (UMR 7615) (SIMM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology macromolecular substances 010402 general chemistry 01 natural sciences Hydrophobic effect thermoresponsive hydrogels Adhesives Materials Chemistry Copolymer [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology Underwater Composite material Aqueous solution Organic Chemistry Temperature technology industry and agriculture Water hydrophobic interactions Hydrogels Adhesion 021001 nanoscience & nanotechnology Elasticity 0104 chemical sciences underwater adhesion Solutions Resist Self-healing hydrogels generic adhesion Adhesive Pressure-Sensitive Adhesives (PSAs) 0210 nano-technology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Macromolecular Rapid Communications Macromolecular Rapid Communications, Wiley-VCH Verlag, 2020, pp.1900653. ⟨10.1002/marc.201900653⟩ |
| ISSN: | 1022-1336 1521-3927 |
| Popis: | International audience; We report a novel bioinspired underwater adhesive based on the injectable aqueous solution of a graft copolymer with a thermoresponsive backbone, which turns into a sticky hydrogel just below body temperature. With this topology, the collapse of the backbones upon the thermal transition leads to the formation of a percolating network of strong hydrophobic domains. Similar to Pressure-Sensitive Adhesives (PSAs), the hydrogel goes through fibrillation and extensive energy dissipation in large deformations, giving it an edge over conventional chemical hydrogels which are typically elastic and inherently non-sticky. This capability comes from the hydrophobic nano-scaffold which resists large deformations to minimize its contact with water. Since hydrophobic interactions are not weakened in water, the behavior of the hydrogel is maintained in aqueous medium. Chemistry-insensitive adhesion of this hydrogel offers a major advantage over current injectable adhesives which rely on in-situ chemical crosslinking reactions with tissues. |
| Databáze: | OpenAIRE |
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