Postprint version. Published in Biochimica et Biophysica Acta (BBA) - Biomembranes, Volume 1329, Issue 1, October 2, 1997, pages 7-11.
NOTE: At the time of publication, the author John P. Hagen was not yet affiliated with Cal Poly.
Some binary lipid mixtures form coexisting liquid phases when spread at the air/water interface. This work describes the pressure–composition phase diagrams of binary mixtures of four unsaturated phosphatidylcholines with dihydrocholesterol. These four binary mixtures have critical compositions of approximately fifty mole percent, and average critical exponents of 0.25±0.07. The data can also be approximated by a regular solution thermodynamic model, yielding parameters for the non-ideality of these mixtures.
Biochemistry | Chemistry