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Constitutive model development and microstructural topology optimisation for Nafion hydrogel membranes with ionic clustering
Hua Li1; Z. Yuan1; T. Y. Ng2; H. P. Lee1; K. Y. Lam1; Q. X. Wang1; Shunnian Wu1; Jie Fu3; Justin Hanes3
2003-07-05
Source PublicationJournal of Biomaterials Science, Polymer Edition
ISSN0920-5063
Volume14Issue:11Pages:1181-1196
Abstract

The deployment of electroactive ionic polymer hydrogel–metal composites in artiŽ cial muscle and BioMEMS applications has recently been intensively investigated. In order to analyse their electromechanical responses to externally applied electrical Ž elds, it is critical to develop a constitutive model linking the macro-mechanical moduli with the micro-mechanical characteristics, and to determine the geometric size and shape of the micro-structural cluster and investigate the effect of cluster morphology on the effective electro-elastic moduli of the polymer hydrogels. As a typical ionic polymer-based hydrogel, the NaŽ on membrane is studied in this work. Based on the Biot poroelasticity theory, a multi-scale constitutive model which includes both macro and micro characteristicsis developed using an asymptotic homogenisationmethod. The effect of water-volume fraction on the effective elastic moduli of the hydrogelmembrane is examined for different equivalent weights. Numerical investigations show that the simulated effective constitutive moduli agree well with experimental data. The presently developed constitutive model is thus validated. In order to determine the micro-structuralshape of the polymerskeleton subject to  uid pressure, a representative volume element (RVE) is designed by topology optimisation of the periodic microstructures of the NaŽ on hydrogels, through the minimisation of the electro-elastic interaction energy between the polymer-based  uorocarbon matrix and the surrounding  uid. This optimal RVE correctly predicts the geometric shapes of the clusters.

KeywordNa Fion Hydrogel Membrane Constitutive Modeling Cluster Micro-structural Topology Optimisation Homogenisation Method Computational Biomems Multi-scale Simulation
DOIhttps://doi.org/10.1163/156856203322553428
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Materials Science ; Polymer Science
WOS SubjectEngineering, Biomedical ; Materials Science, bioMaterials ; Polymer Science
WOS IDWOS:000189091300002
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Corresponding AuthorHua Li
Affiliation1.Institute of High Performance Computing, National University of Singapore, 1 Science Park Road, #01-01 The Capricorn, Singapore Science Park II, Singapore 117528, Republic of Singapore
2.School of Mechanical and Production Engineering,Nanyang TechnologicalUniversity, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore
3.Department of Chemical Engineering, The Johns Hopkins University, 3400 N. Charles Street, 221 MD Hall, Baltimore, MD 21218, USA
Recommended Citation
GB/T 7714
Hua Li,Z. Yuan,T. Y. Ng,et al. Constitutive model development and microstructural topology optimisation for Nafion hydrogel membranes with ionic clustering[J]. Journal of Biomaterials Science, Polymer Edition,2003,14(11):1181-1196.
APA Hua Li.,Z. Yuan.,T. Y. Ng.,H. P. Lee.,K. Y. Lam.,...&Justin Hanes.(2003).Constitutive model development and microstructural topology optimisation for Nafion hydrogel membranes with ionic clustering.Journal of Biomaterials Science, Polymer Edition,14(11),1181-1196.
MLA Hua Li,et al."Constitutive model development and microstructural topology optimisation for Nafion hydrogel membranes with ionic clustering".Journal of Biomaterials Science, Polymer Edition 14.11(2003):1181-1196.
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