Azo-Functionalized Thermoplastic Polyurethane for Light-Driven Shape Memory Materials.
Macromol Rapid Commun
; 44(3): e2200650, 2023 Feb.
Article
em En
| MEDLINE
| ID: mdl-36350231
ABSTRACT
Shape memory polymers have great potential in the fields of soft robotics, injectable medical devices, and as essential materials for advanced electronic devices. Herein, light-triggered shape-memory thermoplastic polyurethane (TPU) is reported using azido TPU grafted by the photoswitchable azo compound. The trans-cis transitions of the azobenzene on the side chain of the TPU induce the recoiling of the main chain, leading to shaping memory behavior. Under UV irradiation, cis-azo allows the oriented main chain to recoil to release residual stress and realize light-triggered shape memory behavior. The facile method proposed here for the preparation of azo-functionalized TPU can provide viable opportunities for soft robotics and smart TPU applications.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Robótica
/
Materiais Inteligentes
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2023
Tipo de documento:
Article