Classic light scattering

With the development of new instrumental techniques, much new information on the size and shape of aqueous micelles has become available. The inceptive description of the micelle as a spherical agglomerate of 20-100 monomers, 12-30 in radius (JJ, with a liquid hydrocarbon interior, has been considerably refined in recent years by spectroscopic (e.g. nmr, fluorescence decay, quasielastic light-scattering), hydrodynamic (e.g. viscometry, centrifugation) and classical light-scattering and osmometry studies. From these investigations have developed plausible descriptions of the thermodynamic and kinetic states of micellar micro-environments, as well as an appreciation of the plurality of micelle size and shape. 

P. Kratochvil, Classical Light Scattering from Polymer Solutions, Vol. 5 of Polymer Science Library, Elsevier, Amsterdam, 1987. 

Kratochvil P (1987) In Jenkins AD (ed) Classical light scattering from polymer solutions, Polym Sci Libr 5, Elsevier, Amsterdam... 

Kratochvil, P., "Advances in Classical Light Scattering from Polymer Solutions," Pure Appl. Chem., 54, 379 (1982). 

In the flow mode, the instruments may be used to collect, simultaneously, the dynamic and classical light scattering data from which the molar mass and root mean square radii are calculated from each slice (See section on fractionation). 

Colloids were routinely studied by classic light scattering. For the alkaline runs, additional Information on their size was obtained by dynamic light scattering and electron microscopy, and on their composition by ultrafiltration. 

Figure 7. Classic light scattering results ho against time (h) for a 1,5 M mono-silicic acid solution at 2O C,...

In this case, we will be speaking of SLS since time is not involved any more. Equation 18.6 actually represents the point of departure of the classical light scattering applications the determination of molecular weights and radius of gyration of polymer molecules. Since... 

Table 12.9 Results from classical light scattering methods compared to electron microscopy for measurement of the diameter (pm) of standard Dow polystyrene latexes...

---