Synthesis of cross-linked triple shape memory polyurethane with self-healing functionalities

Wenwen Zhang; Xuefei Leng; Mengyun Gao; Zhiyong Wei; Yiying Wang; Yang Li

Polymer Testing (Apr 2021)

Synthesis of cross-linked triple shape memory polyurethane with self-healing functionalities

Wenwen Zhang,
Xuefei Leng,
Mengyun Gao,
Zhiyong Wei,
Yiying Wang,
Yang Li

Affiliations

Wenwen Zhang: State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
Xuefei Leng: Corresponding author.; State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
Mengyun Gao: State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
Zhiyong Wei: State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
Yiying Wang: State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
Yang Li: State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China

Journal volume & issue: Vol. 96
p. 107099

Abstract

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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.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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