Decay rate of critical concentration fluctuations in a binary liquid

1982 ◽  
Vol 25 (1) ◽  
pp. 448-465 ◽  
Author(s):  
H. C. Burstyn ◽  
J. V. Sengers
Keyword(s):  
Decay Rate ◽  
Critical Concentration ◽  
Concentration Fluctuations ◽  
Binary Liquid

scholarly journals Theoretical investigations on temperature dependence of thermodynamic properties and concentration fluctuations of In-Tl binary liquid alloys by optimization method

BIBECHANA ◽  
2017 ◽  
Vol 15 ◽  
pp. 11-23
Author(s):  
G K Shrestha ◽  
I S Jha ◽  
B K Singh
Keyword(s):  
Free Energy ◽  
Liquid Alloy ◽  
Entire Range ◽  
Excess Free Energy ◽  
Concentration Fluctuations ◽  
Binary Liquid ◽  
Energy Of Mixing ◽  
Different Temperatures ◽  
Free Energy Of Mixing ◽  
Best Fit

The thermodynamic properties, i.e. free energy of mixing (GM), heat of mixing (HM), entropy of mixing (SM) and activity (ai) of the component i (i , and structural property i.e. concentration fluctuations in long wave-length limit [Scc(0)] of In-Tl binary liquid alloy at a specified temperature have been investigated in the framework of quasi-lattice model on assuming the coupled effect of size ratio and entropic (or energetic) as well as enthalpic effect. These properties of In-Tl liquid alloy at 723 K have been computed theoretically by estimating the best fit value of order energy parameter (W) and size ratio () over the entire range of concentration in order to match their experimental values. The best fit value of  W at 723 K has been used to determine the values of W at different temperatures with the help of temperature derivative of W which are then used for the optimization procedure in order to calculate the corresponding values of excess free energy of mixing, partial excess free energy of mixing and activity of the components involved in the alloy at different temperatures. These parameters have been used to investigate the concentration fluctuations in long wavelength limit {Scc(0)} of In-Tl binary liquid alloy at different temperatures over the entire range of concentration which have been used to predict the various other structural properties like excess stability function (EXS), diffusion coefficient ratio (Dm/Did), short range order parameter (α1) at different temperatures.BIBECHANA 15 (2018) 11-23

Critical concentration fluctuations in polymerizing solutions

1993 ◽  
Vol 71 (10) ◽  
pp. 1653-1656 ◽  
Author(s):  
John C. Wheeler ◽  
Pierre M. Pfeuty
Keyword(s):  
Critical Concentration ◽  
Concentration Fluctuations

Light Scattering from Gels

1989 ◽  
Vol 62 (3) ◽  
pp. 498-514 ◽  
Author(s):  
G. D. Patterson
Keyword(s):  
Light Scattering ◽  
Poisson Ratio ◽  
Critical Concentration ◽  
Polymer Concentration ◽  
Concentration Fluctuations ◽  
Experimental Techniques ◽  
Spatial Correlations ◽  
Basic Principles ◽  
Partial States

Abstract The basic principles necessary to understand light scattering from gels are now well understood. The experimental techniques necessary to measure light scattering from gels are now highly developed. Yet there are many issues that need to be clarified in practice. The spatial correlations that exist in the polymer concentration in a gel need extensive further study. Gel samples with only intrinsic permanent concentration fluctuations need to be prepared. Defects due to dust, microsyneresis or other nonintrinsic inhomogeneities must be eliminated. Then careful measurements of R(q) should yield the necessary information about the microstructure of the gel. The value of the osmotic Poisson ratio is now well understood for gels at rest. Further work needs to be done on samples in partial states of swelling. More work appears promising in the study of critical concentration fluctuations in gels as well.

Shear-induced effects on critical concentration fluctuations

1980 ◽  
Vol 22 (5) ◽  
pp. 2250-2261 ◽  
Author(s):  
D. Beysens ◽  
M. Gbadamassi
Keyword(s):  
Critical Concentration ◽  
Concentration Fluctuations
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