Science Advances

Supplementary Materials

This PDF file includes:

  • section S1. Experimental
  • section S2. Computer simulation
  • fig. S1. Hydrodynamic radius as a function of the methanol mole fraction at 10° and 21°C.
  • fig. S2. Normalized scattering curves for PNIPAM microgel at 10°C measured by SLS in the small q range and SAXS in the high q range.
  • fig. S3. Static SAXS curves for PNIPAM microgel in xMeOH = 0.20 at 10°C.
  • fig. S4. Radially averaged SAXS pattern for PNIPAM in the solvent composition jump from pure MeOH to xMeOH = 0.20 at 5 ms after the mixture.
  • fig. S5. Radially averaged SAXS and fit curves for PNIPAM microgel in the solvent composition jump from pure MeOH to xMeOH = 0.20.
  • fig. S6. Radial excess electron density profiles calculated from the modeling procedure for PNIPAM microgels in the solvent composition jump from MeOH to xMeOH = 0.20 at 10°C.
  • fig. S7. Radially averaged SAXS patterns of PNIPAM microgels for the solvent composition change from pure H2O to xMeOH = 0.20.
  • fig. S8. Radially averaged SAXS patterns and fit curves for PNIPAM in the solvent composition jump from pure H2O to xMeOH = 0.20.
  • fig. S9. Radial excess electron density profiles calculated from the modeling procedure for PNIPAM microgels in the solvent composition jump from H2O to xMeOH = 0.20 at 10°C.
  • fig. S10. Fit results for the collapse transition of PNIPAM induced by the solvent composition jump from pure H2O to xMeOH = 0.20 at 10°C.
  • fig. S11. SAXS curves of PNIPAM in xMeOH = 0.20 obtained by the static equilibrium measurements (squares), by the solvent composition change from MeOH (circles), and by the solvent composition change from H2O (triangles).
  • fig. S12. Turbidity as a function of time for the collapse transition of PNIPAM microgel induced by changing the solvent composition from pure solvent (either H2O or MeOH) to xMeOH = 0.20 at 10°C.
  • fig. S13. Effect of the temperature on the excess enthalpy HE of mixing H2O and MeOH.
  • fig. S14. Schematic representation of the stopped-flow setup for the estimation of the increase of the temperature inside the TC-100/10T cuvette upon H2O/MeOH mixing.
  • fig. S15. Increase of the temperature inside the TC-100/10T cuvette with time by mixing H2O and MeOH at 10°C to reach a final solvent composition of xMeOH = 0.20.
  • fig. S16. Increase of the temperature inside the TC-100/10T cuvette during the H2O/MeOH mixing.
  • fig. S17. Comparison of the temperature-dependent size of PNIPAM microgel.
  • fig. S18. Simulation results of the time evolution of ‹R2g (0) › − ‹R2g (t) › for microgels with different quenching depths ε and different polymer lengths Nm.
  • fig. S19. Results from simulations for evolution of the microgel size and collapse velocity.
  • fig. S20. Results from simulations for monomer distribution and microgel conformations.
  • table S1. Fit results for PNIPAM microgel in pure H2O, pure MeOH, and xMeOH = 0.20 at 10°C.
  • References (66–74)

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