Long Wavelength Concentration Fluctuations and Cage Scale Ordering of Nanoparticles in Concentrated Polymer Solutions

2010 ◽  
Vol 43 (23) ◽  
pp. 10123-10131 ◽  
Author(s):  
So Youn Kim ◽  
Lisa M. Hall ◽  
Kenneth S. Schweizer ◽  
Charles F. Zukoski
Keyword(s):  
Polymer Solutions ◽  
Concentration Fluctuations ◽  
Long Wavelength

Surface Properties and Concentration Fluctuations in Sn-based Molten Alloys

2000 ◽  
Vol 55 (11-12) ◽  
pp. 967-972
Author(s):  
L. C. Prasad ◽  
V. N. Singh
Keyword(s):  
Surface Tension ◽  
Isothermal Compressibility ◽  
Reasonable Agreement ◽  
Surface Segregation ◽  
Concentration Fluctuations ◽  
Bulk Properties ◽  
Long Wavelength ◽  
Bulk Parameter ◽  
The Impact ◽  
The Ideal

Abstract A simple model based on the concept of a layered structure near the interface has been used to investigate the surface tension and surface segregation of SnPb and SnZn molten alloys. With increasing concentration of Sn, the surface tension (σ) of SnPb alloys has been found to increase, while a of SnZn alloys decreases, σ of both systems is smaller than the ideal value ΣCiσi. Our study reveals that both in SnPb and SnZn alloys the heavier atoms segregate towards the surface. The degree of segregation in SnZn alloys is greater than that in SnPb alloys. The Cahn-Hillard phenomenological model for the surface of pure liquids has been extended to binary molten mixtures and applied to the above systems. An attempt has been made to establish a link between the surface tension and the bulk properties such as concentration fluctuations in the long wavelength limit [Scc (0)] and isothermal compressibility (λT). The impact of the very sensitive bulk parameter Scc(0) has been examined. Reasonable agreement between our model and the experiment is observed for binary molten alloys such as SnPb in which the segregation is small, while for the SnZn alloys, in which the segregation is quite large, the agreement is not satisfactory.

Dynamics of concentration fluctuations in ternary polymer solutions

1992 ◽  
Vol 25 (18) ◽  
pp. 4612-4618 ◽  
Author(s):  
F. Roby ◽  
J. F. Joanny
Keyword(s):  
Polymer Solutions ◽  
Concentration Fluctuations ◽  
Ternary Polymer

scholarly journals Concentration fluctuations in polymer solutions under mixed flow

2017 ◽  
Vol 61 (4) ◽  
pp. 711-730 ◽  
Author(s):  
Michael Cromer ◽  
Glenn H. Fredrickson ◽  
L. Gary Leal
Keyword(s):  
Polymer Solutions ◽  
Concentration Fluctuations ◽  
Mixed Flow

scholarly journals Long-wavelength nonequilibrium concentration fluctuations induced by the Soret effect

2006 ◽  
Vol 74 (4) ◽  
Author(s):  
José María Ortiz de Zárate ◽  
José Antonio Fornés ◽  
Jan V. Sengers
Keyword(s):  
Soret Effect ◽  
Concentration Fluctuations ◽  
Long Wavelength

Concentration fluctuations in polymer solutions under extensional flow

2013 ◽  
Vol 57 (4) ◽  
pp. 1211-1235 ◽  
Author(s):  
Michael Cromer ◽  
Michael C. Villet ◽  
Glenn H. Fredrickson ◽  
L. Gary Leal ◽  
Roman Stepanyan ◽  
...  
Keyword(s):  
Polymer Solutions ◽  
Extensional Flow ◽  
Concentration Fluctuations

scholarly journals Conformal solution model for the thermodynamic properties of antimonyindium liquid alloys

1970 ◽  
Vol 9 (9) ◽  
pp. 13-15 ◽  
Author(s):  
SK Chakrabarti ◽  
IS Jha ◽  
BK Jha ◽  
BP Singh
Keyword(s):  
Free Energy ◽  
Liquid Alloy ◽  
Concentration Fluctuations ◽  
Solution Model ◽  
Heat Of Mixing ◽  
Atomic Composition ◽  
Long Wavelength ◽  
Wavelength Limit ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing

In the present work we have considered the antimony-indium liquid alloy which shows anomaly as regards its heat of mixing and the concentration fluctuations in the long-wavelength limit. On the other hand, the free energy of mixing and the entropy of mixing are found to be symmetric about the equi-atomic composition. Such alloying behaviour has been tried to explain on the basis of conformal solution model. This is a statistical mechanical model based on the formation of complex within the liquid alloy. In this model besides the interaction between unlike atoms, that between each constituent element and the complex too is taken into account. In course of theoretical treatment the activity of antimony is also computed for different concentrations. Our results indicate that Sb-In alloys are thermodynamically most stable around the equi-atomic composition. Key words: Binary liquid alloy; Conformal solution model; Free energy of mixing; Activity; Heat of mixing; Entropy of mixing; Concentration fluctuations in the long-wavelength limit. DOI: http://dx.doi.org/10.3126/sw.v9i9.5510 SW 2011; 9(9): 13-15

Flow-induced concentration fluctuations in polymer solutions: Structure/property relationships

1993 ◽  
Vol 32 (1) ◽  
pp. 1-8 ◽  
Author(s):  
P. Moldenaers ◽  
H. Yanase ◽  
J. Mewis ◽  
G. G. Fuller ◽  
C. S. Lee ◽  
...  
Keyword(s):  
Polymer Solutions ◽  
Concentration Fluctuations ◽  
Structure Property ◽  
Structure Property Relationships
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