Static light scattering suspensions

Now, let us look at Fig. 13. Here, the static structure factor of a three-dimensional homogeneous suspension of polystyrene spheres of diameter 94 nm is shown. The particles volume fraction is 0 = 2.0 x 10 4. Experimental data from static light scattering (closed circles) are compared with computer simulation (Monte Carlo) results (symbol x) and theoretical predictions (lines) obtained from the Ornstein-Zernike equation and different closure relations. The computer simulations and the theoretical calculations where carried out assuming that the interaction between the... 

H.M. Wyss, J. Innerlohinger, L.P. Meier, L.J. Gauckler, O. Glatter, Small-angle static light scattering of concentrated silica suspensions during in situ destabilization. J. Colloid Interface Sci. 271(2), 388-399 (2004). doi 10.1016/j.jcis.2003.09.051... 

Any measurement of time-averaged scattering intensity falls into a category known as static light scattering (which includes laser diffraction, discussed in detail in Chapter 3). We limit the content of this subsection to the measurements of scattering intensity in order to determine absolute particle mass (molecular weight) and/or other parameters of very small and weak scatterers such as macromolecules and surfactants in solution in non-disturbed (still) solutions or suspensions. 

Figm 8 Experimental results of static light scattering for dilute and concentrated turbid suspensions of spherical particles (polystyrene latex with average radius 274 nm). (a) Normalized scattering intensity measured by an ordinary LLS instrument for a dilute solution (hollow circles)... 

In colloidal suspensions of anisotropic particles, the static structure factor plays a prominent role in particle size analysis. We have used transient electric birefringence (TEB) and electron microscopy, in addition to laser light scattering, to correlate our analysis of particle size distributions of bentonite suspensions. The complementary nature of TEB and photon correlation spectroscopy (PCS) in particle size analysis will be discussed. 

The size distribution of solid samples can be determined by static and dynamic light-scattering techniques the size ranges from a few nanometers to a few microns. The concept uses the idea that small particles in a suspension move in a random pattern called Brownian motion. When the moving particles are irradiated by a... 

The results are summarized in Table 2 and 3. Table 2 represents the results of the static and dynamic light scattering of the samples in aqueous suspension. The values of Rg, and My, have increased from the azofunctionalized microsphere to the PMMA-copolymer, i.e., the grafting reaction was successful. The p value of 0.9 shows that the particles are not aggregated after the polymerization which should result in much larger values of p. 

Klein R. Static scattering properties of colloidal suspensions. In Brown W, ed. Light Scattering Principles and Development. Oxford Clarendon, 1996 30-102. 

Holthoff, H., Borkovec, M. and Schurtenberger, P., Determination of light scattering form factors of latex particle dimers with simultaneous static and dynamic light scattering in an aggregating suspension, Phys. Rev., E, 56, 6945-6953 (1997). 

J. Buitenhuis, J. K. G. Dhont, and H. N. W. Lekkerkerker, Static and dynamic light scattering by concentrated colloidal suspensions of polydisperse sterically stabilized boehmite rods, Macromolecules, vol. 27, no. 25, pp. 7267—7277, 1994. 

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