Trends in polymeric shape memory hydrogels and hydrogel actuators

Recently, "smart" hydrogels with either shape memory behavior or reversible actuation have received particular attention and have been further developed into sensors, actuators, or artificial muscles. These three-dimensional polymer networks with the capability of shape deformations show a...

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Bibliographic Details
Published in:Polymer chemistry 2019-03, Vol.1 (9), p.136-155
Main Authors: Shang, Jiaojiao, Le, Xiaoxia, Zhang, Jiawei, Chen, Tao, Theato, Patrick
Format: Article
Language:English
Subjects:
Actuation
Actuators
Artificial muscles
Deformation
Hydrogels
Phase transitions
Polymer chemistry
Shape memory
Stimuli
Transportation networks
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Summary:Recently, "smart" hydrogels with either shape memory behavior or reversible actuation have received particular attention and have been further developed into sensors, actuators, or artificial muscles. These three-dimensional polymer networks with the capability of shape deformations show a volume phase transition after being triggered by external physicochemical stimuli. Here, we review the recent advancements and the different types of shape memory hydrogels (SMHs). In addition, stimuli-responsive hydrogel actuators have been investigated with a special focus on their stimulation, their motion-deformation strategies and on the fabrication technologies adopted in hydrogel-based actuators, and finally their applications are described and discussed using specific examples. Recently, "smart" hydrogels with either shape memory behavior or reversible actuation have received particular attention and have been further developed into sensors, actuators, or artificial muscles.
ISSN:1759-9954
1759-9962
DOI:10.1039/c8py01286e