scholarly journals Virial coefficients and osmotic pressure in polymer solutions in good-solvent conditions

2006 ◽  
Vol 125 (9) ◽  
pp. 094903 ◽  
Author(s):  
Sergio Caracciolo ◽  
Bortolo Matteo Mognetti ◽  
Andrea Pelissetto
Keyword(s):  
Osmotic Pressure ◽  
Polymer Solutions ◽  
Virial Coefficients

Calculation of the Osmotic Pressure and Theta Temperature of Polymer Solutions Through Cubic Equations of State and the McMillan–Mayer Solution Theory Framework

2010 ◽  
Vol 49 (6) ◽  
pp. 1083-1093
Author(s):  
Raphael da C. Cruz ◽  
Manoel J. Da C. Esteves ◽  
Rodrigo G. D. Teixeira ◽  
Márcio J. E. De M. Cardoso ◽  
Oswaldo E. Barcia
Keyword(s):  
Osmotic Pressure ◽  
Polymer Solutions ◽  
Equations Of State ◽  
Solution Theory ◽  
Theta Temperature ◽  
Theory Framework

The Second Virial Coefficients of Polymer Solutions

1962 ◽  
Vol 17 (3) ◽  
pp. 578-579 ◽  
Author(s):  
Nobuhiro Kuwahara ◽  
Yasuhiro Miyake ◽  
Motozo Kaneko ◽  
Jiro Furuichi
Keyword(s):  
Polymer Solutions ◽  
Virial Coefficients ◽  
Second Virial Coefficients

Plasma protein osmotic pressure equations and nomogram for sheep

1991 ◽  
Vol 71 (2) ◽  
pp. 481-487 ◽  
Author(s):  
S. Yamada ◽  
M. K. Grady ◽  
V. Licko ◽  
N. C. Staub
Keyword(s):  
Osmotic Pressure ◽  
Protein Concentration ◽  
Average Molecular Weight ◽  
Virial Coefficients ◽  
Nonlinear Least Squares ◽  
Albumin Concentration ◽  
Protein Protein Interaction ◽  
Random Samples ◽  
The One ◽  
Best Fit

The equations developed by Landis and Pappenheimer (Handbook of Physiology. Circulation, 1963, p. 961–1034) for calculating the protein osmotic pressure of human plasma proteins have been frequently used for other animal species without regard to the fractional albumin concentration or correction for protein-protein interaction. Using an electronic osmometer, we remeasured the protein osmotic pressure of purified sheep albumin and sheep plasma partially depleted of albumin. We measured protein osmotic pressures of serial dilutions over the concentration range 0–180 g/l for albumin and 0–100 g/l for the albumin-depleted proteins at room temperature (26 degrees C). Using a nonlinear least squares parameter-fitting computer program, we obtained the equation of best fit for purified albumin, and then we used that equation together with the measured albumin fraction to obtain the best-fit equation for the nonalbumin proteins. The equation for albumin is IIcmH2O,39 degrees C = 0.382C + 0.0028C2 + 0.000013C3, where C is albumin concentration in g/l. The equation for the nonalbumin fraction is IIcmH2O,39 degrees C = 0.119C + 0.0016C2. Up to 200- and 100-g/l protein concentration, respectively, these equations give the least standard error of the estimate for each of the virial coefficients. The computed number-average molecular weight for the nonalbumin proteins is 222,000. Using the new equations, we constructed a nomogram, based on the one of Nitta and co-workers (Tohoku J. Exp. Med. 135: 43–49, 1981). We tested the nomogram using 144 random samples of sheep plasma and lymph from 31 sheep. We obtained a correlation coefficient of 0.99 between the measured and nomogram estimates of protein osmotic pressure.

Sign in / Sign up

Export Citation Format

Share Document