中文版 | English
Title

Engineering viscoelastic mismatch for temporal morphing of tough supramolecular hydrogels

Author
Corresponding AuthorWu, Zi Liang
Publication Years
2022-12-21
DOI
Source Title
ISSN
2051-6347
EISSN
2051-6355
Volume10Pages:432-442
Abstract
Viscoelasticity is a generic characteristic of soft biotissues and polymeric materials, endowing them with unique time- and rate-dependent properties. Here, by spatiotemporally tailoring the viscoelasticity in tough supramolecular hydrogels, we demonstrate reprogrammable morphing of the gels based on differential viscoelastic recovery processes that lead to internal strain mismatch. The spatial heterogeneity of viscoelasticity is encoded through integrating dissimilar hydrogels or by site-specific treatment of a singular hydrogel. The temporal morphing behavior of tough gels, including a fast deformation process and then a slow shape-recovery process, is related to the kinetics of associative interactions and the entropic elasticity of supramolecular networks after pre-stretching and release, which takes place spontaneously in the absence of external stimuli. Such a kinetically driven morphing mechanism resolves the trade-off between the mechanical robustness and shape-changing speed in tough hydrogels with dense entanglements and physical associations, and should be applicable to other viscoelastic materials. A numerical theory for the temporal morphing of tough supramolecular gels has been formulated by dynamic coupling of viscoelastic recovery and mechanics of deformations, which is further implemented to predict the sophisticated morphed structures. Furthermore, magnetic particles are incorporated into the morphed tough hydrogels to devise versatile soft actuators and robots for specific applications.
© 2023 The Royal Society of Chemistry.
Indexed By
EI ; SCI
Language
English
SUSTech Authorship
Others
Funding Project
This research was supported by the National Natural Science Foundation of China (51973189, 52173012, and 11972015), the Natural Science Foundation of Zhejiang Province of China (LR19E030002), and the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering (2022SZ-FR004).
WOS Accession No
WOS:000908016600001
Publisher
EI Accession Number
20230213372480
EI Keywords
Economic and social effects ; Gels ; Hydrogels ; Magnetic actuators ; Recovery ; Shape optimization ; Supramolecular chemistry
ESI Classification Code
Electric Components and Equipment:704 ; Control Equipment:732.1 ; Colloid Chemistry:801.3 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Optimization Techniques:921.5 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Social Sciences:971
Data Source
EV Compendex
Citation statistics
Cited Times [WOS]:3
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/519780
DepartmentDepartment of Mechanics and Aerospace Engineering
Affiliation
1.Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou; 310027, China
2.Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
3.Design Informatics, Edinburgh College of Art, University of Edinburgh, Edinburgh; EH8 9JS, United Kingdom
Recommended Citation
GB/T 7714
Hao, Xing Peng,Zhang, Chuan Wei,Hong, Wei,et al. Engineering viscoelastic mismatch for temporal morphing of tough supramolecular hydrogels[J]. Materials Horizons,2022,10:432-442.
APA
Hao, Xing Peng.,Zhang, Chuan Wei.,Hong, Wei.,Meng, Meng.,Hou, Li Xin.,...&Wu, Zi Liang.(2022).Engineering viscoelastic mismatch for temporal morphing of tough supramolecular hydrogels.Materials Horizons,10,432-442.
MLA
Hao, Xing Peng,et al."Engineering viscoelastic mismatch for temporal morphing of tough supramolecular hydrogels".Materials Horizons 10(2022):432-442.
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