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2016 | OriginalPaper | Buchkapitel

1. Polymer Gels as EAPs: Fundamentals

verfasst von : Andreas Voigt, Andreas Richter

Erschienen in: Electromechanically Active Polymers

Verlag: Springer International Publishing

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Abstract

Smart hydrogels are soft polymer particles that swell and deswell by taking up water according to external stimuli. After a general introduction, we extensively discuss the thermodynamics that governs the swelling equilibrium of neutral and polyelectrolyte gels. The kinetics of gel swelling is then presented in two models: The Tanaka-Fillmore model that is based on pure mechanics and the more advanced model by Doi which includes thermodynamic processes as the reason for swelling and deswelling. In the following section, the possible sensitivities with which smart hydrogels have been equipped are discussed. Finally we outline the current challenges of fabricating hydrogels with improved mechanical properties.

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Nächstes Kapitel Polymer Gels as EAPs: Materials
Fußnoten
1
Some authors use the Gibbs free energy \( G \) which results in a completely equivalent description, since both external pressure and total volume of the system are considered constant.
 
2
These values are calculated from the values given in Hirotsu’s paper, who states them in a different shape based on the chemical potential.
 
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Metadaten
Titel
Polymer Gels as EAPs: Fundamentals
verfasst von
Andreas Voigt
Andreas Richter
Copyright-Jahr
2016
Buch
Electromechanically Active Polymers

Print ISBN: 978-3-319-31528-7

Electronic ISBN: 978-3-319-31530-0

Copyright-Jahr: 2016

DOI
https://doi.org/10.1007/978-3-319-31530-0_1

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