| Autor: |
Wenwen Zhang, Xuefei Leng, Mengyun Gao, Zhiyong Wei, Yiying Wang, Yang Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Polymer Testing, Vol 96, Iss , Pp 107099- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
0142-9418 |
| DOI: |
10.1016/j.polymertesting.2021.107099 |
| Popis: |
A series of shape memory polymers (SMPs) comprising poly (10-hydroxydecanoate) (PHDA) and polyethylene glycol (PEG) oligomer were facilely prepared. The effect of PEG content on the thermal dynamic properties of the cross-linking network were studied by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The obtained polyurethane has two separated melting temperatures (Tm), which make the material a triple SMP. The shaped specimen only needs 8 s to get a 98.5% the shape recovery. Furthermore, disulfide bonds were introduced into the polyurethane to give the triple SMP self-healing ability. The synthetic polymer exhibited a self-healing efficiency of 78.3%. The healed samples could lift a weight of 100 g, which is 150 times of its own weight, without tearing. This polyurethane exhibits impressive triple-shape memory ability and a high potential for biomedical applications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
Full Text from ScienceDirect