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

Title data

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 March 2022) .
ISSN 2052-1537
DOI: https://doi.org/10.1039/D2QM00041E

Official URL: Volltext

Project information

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

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: No
Keywords: poly (vinyl alcohol); multi-responsive shape memory; NIR responsiveness; water responsiveness; healing fatigued properties
Institutions of the University: Faculties > Faculty of Engineering Science > Professor Biofabrication > Professor Biofabrication - Univ.-Prof. Dr. Leonid Ionov
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 23 Mar 2022 10:52
Last Modified: 23 Mar 2022 10:52
URI: https://eref.uni-bayreuth.de/id/eprint/68992