Phase Separation and Gelation in Gelatin Gels
Abstract
We present evidence for the existence of phase separation in gelatin gels having methanol-water mixtures as the gel fluid. The curves for the liquid-gel transition and the spinodal line were determined using measurements of viscosity and of scattered or transmitted light intensity, respectively. For the 30%-methanol-water mixture, the gelation curve terminates at the critical point. We also analyze the observed phase equilibria of the gels with a simple mean-field theory.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1979
- DOI:
- 10.1103/PhysRevLett.42.1556
- Bibcode:
- 1979PhRvL..42.1556T