A modeling analysis for effect of elastic modulus on kinetics of ionic-strength-sensitive hydrogel

This is the first work to study the influence of elastic modulus on the kinetic performance of smart hydrogels responsive to the stimulus of the ionic strength of the environmental solution, via a multiphysics transient model, which was developed by the present authors and is known as the multi-effe...

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Bibliographic Details
Published in:Acta mechanica 2015-06, Vol.226 (6), p.1957-1969
Main Authors: Lai, Fukun, Li, Hua, Zou, Hua
Format: Article
Language:English
Subjects:
Analysis
Classical and Continuum Physics
Control
Dynamical Systems
Electric fields
Engineering
Engineering Thermodynamics
Environmental law
Heat and Mass Transfer
Hydrogels
Kinetics
Materials elasticity
Mechanics
Solid Mechanics
Theoretical and Applied Mechanics
Vibration
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Summary:This is the first work to study the influence of elastic modulus on the kinetic performance of smart hydrogels responsive to the stimulus of the ionic strength of the environmental solution, via a multiphysics transient model, which was developed by the present authors and is known as the multi-effect-coupling ionic-strength-stimulus model. It is based on the conservation laws of momentum and mass, and considers the poroelasticity of the hydrogel with coupling the chemical, electrical and mechanical energy domains together. After the model is further validated in this paper via a good comparison with experimental data for the case of kinetics of HMDT hydrogel, it is employed as an accurate theoretical platform to investigate the influence of elastic modulus of the smart hydrogel in transient state. The discussion is detailed for the influence on the hydrogel deformation, the distributions of fixed charge and diffusive ionic concentrations, and the chemical and electric fields over both the hydrogel and surrounding solution, in order to make a fundamental understanding of the kinetics mechanism of the ionic-strength-sensitive hydrogel, especially how the Young’s modulus influences the performance of the hydrogel in transient state.
ISSN:0001-5970
1619-6937
DOI:10.1007/s00707-014-1290-2