scholarly journals Broadening of the vibrational linewidth in a mixture due to critical concentration fluctuations

1995 ◽  
Vol 16 (3) ◽  
pp. 585-598 ◽  
Author(s):  
J. A. Schouten ◽  
M. I. M. Scheerboom
Keyword(s):  
Critical Concentration ◽  
Concentration Fluctuations

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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