Rheo-Impedance Measurements for the Evaluation of Thermoresponsive Polymer Gels.

ABSTRACT: Although various thermoresponsive properties of poly(N-isopropylacrylamide) (PNIPAM) hydrogels have been investigated during phase transitions, the effects of the changing gel structure on the electrochemical properties of PNIPAM gels are poorly understood. Therefore, this study uses rheo-impedance measurements under simultaneous temperature modulation and shear deformation to examine the mechanism governing the conductivity of these gels. The impedance spectra of the PNIPAM hydrogels exhibit a distinct transition near the lower critical solution temperature, indicating that the internal conductive pathways dynamically reconstruct, associated with gel deswelling. Meanwhile, the nonlinear behavior of the impedance response with the varying shear rate suggests shear-induced degradatio

SUBMITTER: Shitanda I 

PROVIDER: S-EPMC12659433 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature