scholarly journals Differential osmotic pressure measurements of the concentration susceptibility of liquid /sup 3/He//sup 4/He mixtures near the lambda curve and tricritical point

1976 ◽  
Author(s):  
Jr, C. A. Gearhart ◽  
W. Jr. Zimmermann
Keyword(s):  
Osmotic Pressure ◽  
Tricritical Point ◽  
Pressure Measurements

Counter-ion activity and microstructure in polyelectrolyte complexes as determined by osmotic pressure measurements

2006 ◽  
Vol 8 (26) ◽  
pp. 3141-3146 ◽  
Author(s):  
David Carrière ◽  
Monique Dubois ◽  
Monika Schönhoff ◽  
Thomas Zemb ◽  
Helmut Möhwald
Keyword(s):  
Osmotic Pressure ◽  
Pressure Measurements ◽  
Polyelectrolyte Complexes ◽  
Counter Ion ◽  
Ion Activity

scholarly journals On the boiling point of water

1911 ◽  
Vol 85 (581) ◽  
pp. 477-489 ◽  
Keyword(s):  
Osmotic Pressure ◽  
Vapour Pressure ◽  
Boiling Point ◽  
Pressure Measurements ◽  
Total Height ◽  
Boiling Points ◽  
Saturated Solutions

Introduction . —In the course of some work, communicated to the Royal Societ by one of us, in which determinations of the boiling points of some saturated solutions were made by Buchanan’s method (the so-called Landsberger-Sakurai method), it was pointed out that these boiling points probably varied according to the height of liquid operated upon. During the course of that research a few experiments, which, however, are not recorded in the paper, were made on the boiling point of water; and it was found that this boiling point was approximately that due to a head of water equal to half the total height of liquid. The paper cited mentioned the hope that direct osmotic pressure measurements might be obtained; this hope has not been fulfilled, but as an exact connection between the vapour-pressure and the osmotic pressure of a solution has since been worked out, a knowledge of the boiling points will enable the osmotic pressure to be calculated.

Direct osmotic pressure measurements on partially neutralized poly(acrylic acid) gels

1993 ◽  
Vol 3 (6) ◽  
pp. 927-936
Author(s):  
C. Weill ◽  
T. Lachhab ◽  
P. Moucheront
Keyword(s):  
Light Scattering ◽  
Acrylic Acid ◽  
Osmotic Pressure ◽  
Polymer Concentration ◽  
Theoretical Models ◽  
Experimental Device ◽  
Pressure Measurements ◽  
Ionization Degree ◽  
Good Agreement ◽  
Poly Acrylic Acid

We present a new experimental device to measure the osmotic pressure in gels. The system has been tested on partially neutralized poly(acrylic acid) gels. The variation of the osmotic pressure with polymer concentration, Φ, and ionization degree, α, is linear, provided that α is not too high (I.e. the counterions do not condense on the chains). These results are in good agreement with theoretical models and with compressibility measurements obtained by light scattering experiments. The very charged gels are also studied, and the results are discussed in the frame of existing theories and experiments.

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