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Thermo-, near-infrared light- and water-induced shape memory polymer with healing fatigued shape memory performance

Titelangaben

Bai, Yongkang ; Ionov, Leonid:
Thermo-, near-infrared light- and water-induced shape memory polymer with healing fatigued shape memory performance.
In: Materials Chemistry Frontiers. (22 März 2022) .
ISSN 2052-1537
DOI: https://doi.org/10.1039/D2QM00041E

Volltext

Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projektfinanzierung: DFG IO 68/10-1
DFG IO 68/11-1
DFG IO68/17-1
National Natural Science Foundation of China (51903204)

Abstract

Although multi-responsive shape memory polymers (SMPs) have been rapidly developed in recent years due to their wide application in sensors, actuators and biomedical devices, their fabrication via a facile approach is still a challenge. Herein, a shape memory polymer with excellent thermo-, near-infrared (NIR) light- and water-induced shape memory performance was fabricated by introducing tannic acid/ ferric ion (TA/Fe3+) coordination into cross-linked poly (vinyl alcohol) (PVA). The shape memory performance was achieved by cross-linking PVA and TA with hexamethylene diisocyanate, while the NIR light and water responsiveness were provided by photothermal effects of TA/Fe3+ and hydrophilic nature of PVA, respectively. The shape recovery ratio induced by three stimuli all could reach over 95%. Moreover, it was found that the fatigued shape memory performance can be healed by simply immersing materials into water, and it was also applicable for other thermoset SMPs using suitable solvents, which could greatly improve the service life and reliability of SMPs.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Nein
Keywords: poly (vinyl alcohol); multi-responsive shape memory; NIR responsiveness; water responsiveness; healing fatigued properties
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation > Professur Biofabrikation - Univ.-Prof. Dr. Leonid Ionov
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 23 Mär 2022 10:52
Letzte Änderung: 23 Mär 2022 10:52
URI: https://eref.uni-bayreuth.de/id/eprint/68992