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Updated: Aug 16, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
Multiphysics modelling of volume phase transition of ionic hydrogels responsive to thermal stimulus
Hua Li1, Xiaogui Wang, Zijie Wang
1Institute of High Performance Computing, National University of Singapore, 1 Science Park Road, number 01-01 The Capricorn, Singapore Science Park II, Singapore 117528. lihua@ihpc.a-star.edu.sg
Abstract:
This paper presents the analysis of the volume phase transition of ionic thermo-sensitive hydrogels to thermal stimulus through mathematical modelling. The model is termed the multi-effect-coupling thermal-stimulus (MECtherm) model and it considers the effects of multi-phases and multi-physics. Its application to steady-state analysis of the hydrogels in swelling equilibrium is validated against available experimental data for the relation between volume swelling ratio and temperature, in which very good agreement is achieved. The phenomenon of volume phase transition is studied for the thermal-stimulus responsive hydrogel. The numerical studies predict well the influences of initially fixed charge density and initial volume fraction of polymeric network on the swelling equilibrium of the hydrogels.
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