Modeling the effects of temperature and pH on swelling of stimuli-responsive gels

A. D. Drozdov, C. G. Sanporean, J. De C. Christiansen

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


A model is developed for the mechanical behavior of and water uptake by thermo- and pH-sensitive gels. Constitutive equations are derived by means of the free energy imbalance inequality for an arbitrary three-dimensional deformation accompanied by swelling. Adjustable parameters are found by fitting experimental data on N-isopropylacrylamide-acrylic acid, N-isopropylacrylamide-itaconic acid, N-isopropylacrylamide-sodium acrylate and N-isopropylmethacrylamide-sodium methacrylate copolymer gels under unconstrained swelling. Quantitative agreement is demonstrated between the observations and results of simulation. The effects of temperature, pH, and molar fraction of anionic monomers on degree of swelling under constrained water uptake are studied numerically.

Original languageEnglish
Pages (from-to)278-296
Number of pages19
JournalEuropean Polymer Journal
StatePublished - 1 Dec 2015
Externally publishedYes


  • Equilibrium swelling
  • Modeling
  • Phase transition
  • Thermo-responsive gel
  • pH-sensitive gel

ASJC Scopus subject areas

  • Physics and Astronomy (all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


Dive into the research topics of 'Modeling the effects of temperature and pH on swelling of stimuli-responsive gels'. Together they form a unique fingerprint.

Cite this