AI Article Synopsis

  • Ion-induced volume phase transitions in polyelectrolyte gels are crucial for various biological functions like mucus management in the gut, nerve signaling, and DNA organization.
  • Experimental studies indicate that adjusting the ionic environment can lead to quick swelling or shrinking of these gels.
  • Using a computational model, 2D simulations reveal how the gel's deswelling process is influenced by the interplay of chemical and mechanical forces, shedding light on the relationship between deswelling patterns and the gel's ionic makeup and interaction energies.

Article Abstract

Ion-induced volume phase transitions in polyelectrolyte gels play an important role in physiological processes such as mucus storage and secretion in the gut, nerve excitation, and DNA packaging. Experiments have shown that changes in ionic composition can trigger rapid swelling and deswelling of these gels. Based on a previously developed computational model, we carry out 2D simulations of gel deswelling within an ionic bath. The dynamics of the volume phase transition are governed by the balance of chemical and mechanical forces on components of the gel. Our simulation results highlight the close connections between the patterns of deswelling, the ionic composition, and the relative magnitude of particle-particle interaction energies.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11620795PMC
http://dx.doi.org/10.1007/978-3-031-36030-5_27DOI Listing

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