Pressure-jump Experiments for the Study of the Kinetics of Phase Separation in the Binary System Ethene/Hexane. I. Transient Light Scattering Measurements

1990 ◽  
Vol 94 (4) ◽  
pp. 447-452 ◽  
Author(s):  
U. Metz ◽  
G. M. Schneider
Keyword(s):  
Phase Separation ◽  
Light Scattering ◽  
Binary System ◽  
Pressure Jump ◽  
Scattering Measurements ◽  
Kinetics Of

DISSOCIATION AND SUBUNIT SIZE OF β-LIPOVITELLIN

1965 ◽  
Vol 43 (6) ◽  
pp. 661-670 ◽  
Author(s):  
W. H. Cook ◽  
R. A. Wallace
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Dissociation Constants ◽  
Dry Weight ◽  
Ph Values ◽  
Scattering Measurements ◽  
Solvent Displacement ◽  
Weight Method ◽  
Kinetics Of ◽  
Good Agreement

Dissociation of β-lipovitellin was detectable at pH 5.8 and increased linearly with pH. Light-scattering measurements at different pH values were consistent with a molecular weight of 2.27 × 105 for the subunit and twice this value for the associated form, confirming that it is a monomer–dimer system. This value for the molecular weight of the dimer is somewhat higher than previously reported (4.0 × 105) partly because a solvent displacement correction was used in estimating concentration by a dry weight method. Dissociation constants evaluated from light-scattering measurements and by ultracentrifugal separation were 22 × 10−6 and 29 × 10−6 respectively, in good agreement with provisional values already reported. Preliminary studies on the kinetics of this reaction indicate that, when the pH is altered, dissociation reaches the new equilibrium in about 0.5 minute but that reassociation requires about 50 minutes.

Kinetics of phase separation in polymer blends revealed by resonance light scattering spectroscopy

2010 ◽  
Vol 12 (9) ◽  
pp. 2238 ◽  
Author(s):  
Jin Yang ◽  
Xudong Chen ◽  
Ruowen Fu ◽  
Wei-ang Luo ◽  
Yunbo Li ◽  
...  
Keyword(s):  
Phase Separation ◽  
Light Scattering ◽  
Polymer Blends ◽  
Resonance Light Scattering ◽  
Light Scattering Spectroscopy ◽  
Kinetics Of

Modelling of aggregation kinetics of colloidal systems and its validation by light scattering measurements

2004 ◽  
Vol 59 (8-9) ◽  
pp. 1783-1798 ◽  
Author(s):  
Marco Lattuada ◽  
Hua Wu ◽  
Peter Sandkühler ◽  
Jan Sefcik ◽  
Massimo Morbidelli
Keyword(s):  
Light Scattering ◽  
Aggregation Kinetics ◽  
Colloidal Systems ◽  
Scattering Measurements ◽  
Kinetics Of

Fractal Concepts And Aggregation Of Iron Oxides

1990 ◽  
Vol 180 ◽  
Author(s):  
R. Amal ◽  
J.A. Raper ◽  
T.D. Waite
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Iron Oxides ◽  
Aggregate Size ◽  
Fractal Dimensions ◽  
Aggregation Kinetics ◽  
Diffusion Limited ◽  
Scattering Measurements ◽  
The Relationship ◽  
Kinetics Of

ABSTRACTThe modelling of the aggregation kinetics of iron oxides has been succesful in predicting the increase in aggregate size as determined by dynamic light scattering measurements. The aggregates were found to exhibit fractal behaviour with fractal dimensions obtained from the scattering exponent in static light scattering studies dependent on the aggregation mechanism and ranging from 2.3 for rapid (diffusion limited) to 2.8 for slow (reaction limited) aggregation. Polydispersity and restructuring of aggregates were found not to affect the relationship between scattering exponent and aggregate fractal dimension. Excellent correspondence over a range of temperatures and ionic strengths has been obtained between results of sizing experiments using dynamic light scattering and sizes predicted using a modified Smoluchowski model incorporating fractal dimensions.

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