Swelling of thermo-responsive hydrogels

A. D. Drozdov

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Abstract.: A model is developed for the elastic response and solvent diffusion through a thermo-responsive gel under an arbitrary deformation with finite strains. The constitutive equations involve the stress-strain relation, the nonlinear diffusion equation for solvent molecules, the heat conduction equation, and the Allen-Cahn equation for an order parameter (proportional to the concentration of hydrophilic segments in polymer chains). Material constants are found by fitting swelling diagrams for PNIPA gels under uniaxial tension. Numerical analysis demonstrates good agreement between predictions of the model and observations in tests with stress- and strain-controlled programs.

Original languageEnglish
Article number93
Pages (from-to)1-13
Number of pages13
JournalEuropean Physical Journal E
Volume37
Issue number10
DOIs
StatePublished - 3 Oct 2014
Externally publishedYes

Keywords

  • Soft Matter: Polymers and Polyelectrolytes

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Chemistry (all)
  • Materials Science (all)
  • Surfaces and Interfaces

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