Colloidal solutions, light-scattering studies

Colloidal solutions, light-scattering studies of adsorption of end-functionalized polymers, 96-109... 

Zhou, Z Chu, B, Light-Scattering Study on the Association Behavior of Triblock Polymers of Ethylene Oxide and Propylene Oxide in Aqueous Solution, Journal of Colloid and Interface Science 126, 171, 1988. 

Rescic, J., Vlachy, V., Jamnik, A., and Glatter, O. Osmotic pressure, small-angle x-ray, and dynamic light scattering studies of human serum albumin in aqueous solutions. Journal of Colloid and Interface Science, 2001, 239, No. 1, p. 49-57. 

Stieber, F. and Eicke, H.-F. (1996) Solution of telechelic ionomers in a water/AOT/oU (w/o) microemulsion A static and dynamic light scattering study. Colloid Polym. Sci., 274, 826-835. 

Zhou, Z. and Chu, B., 1988. Light-scattering study on the association behavior of triblock polymers of ethylene oxide and propylene oxide in aqueous solution. Journal of Colloid and Interface Science, 126(1), 171-180. 

Studies have been reported of the complex equilibria present in electrolytically produced supersaturated solutions of Zn2+ in aqueous KOH. Light-scattering and NMR techniques indicate the excess zinc to be present as a solute, rather than a colloid, and the predominant species appears to be the [Zn(OH)4]2 ion.606 However, Raman and potentiometric studies indicate that initially, quasi-colloidal particles, based on Zn(OH)2 and molecules of solvation, are present.607 These particles undergo a first-order decay to yield a solution containing the species [Zn(0H)2(H20)2], [Zn(0H)3H20] and [Zn(OH)4]2-, the actual constitution depending on the concentration. The non-colloidal zinc species are tetrahedral, rather than planar or octahedral. Stability constants for the ions [Zn(OH)n](" 2) ( = 1-3) have been reported.608... 

As we shall see, the intensity, polarisation and angular distribution of the light scattered from a colloidal system depend on the size and shape of the scattering particles, the interactions between them, and the difference between the refractive indices of the particles and the dispersion medium. Light-scattering measurements are, therefore, of great value for estimating particle size, shape and interactions, and have found wide application in the study of colloidal dispersions, association colloids, and solutions of natural and synthetic macro-molecules. 

Although DLS is most often used to size solid colloidal particles, the technique has also been applied to characterize aerosols [78,86,87], emulsion droplets [88,89], amphiphilic systems [90-92], and macromolecular solutions [12,16,93]. Another common application is the study of the fractal structure and kinetics of colloidal aggregation [94-102], More information about dynamic light scattering and its applications can be found in Refs. 23. 103 (104), and 105, in reviews, Refs. 11, 13, 36, 37, 49, 50, and 106, and in collections of papers Refs. 12. 14. 16. 93 (107), 105, and 108-114. 

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