Static and dynamic light scattering

Einaga and Fujisawa [63] carried out DLS measurements on benzene solutions of PS in order to characterise the viscoelastic properties. Static light scattering measurements of chloroform and tetrahydrofuran (THE) solutions have been used to characterise copolymers of polymethyl methacrylate and bendazole dyes [64]. Cametti and co-workers [65] have carried out both static and DLS measurements on THE, toluene, and chloroform solutions of polyphenylacetylene. Each solvent produces a different effect on the pristine structure of polyphenylacetylene. 

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Burchard, W. Static and Dynamic Light Scattering from Branched Polymers and Biopolymers. Vol. 48, pp. 1—24. 

Brown, W Schillen, K Hvidt, S, Triblock Copolymers in Aqueous Solution Studied by Static and Dynamic Light Scattering and Oscillatory Shear Measurements. Influence of Relative Block Sizes, Journal of Physical Chemistry 96, 038, 1992. 

Berry, G.C. Static and Dynamic Light Scattering on Moderately Concentraded Solutions Isotropic Solutions of Flexible and Rodlike Chains and Nematic Solutions of Rodlike Chains. VoL 114, pp, 233-290. 

In order to check these results, Lutz et al. degraded polymer samples which had been isolated shortly before macrogelation, by ultrasonic waves [213]. Figure 38A shows the decrease of Mw and of the hydrodynamic diameter dz, measured by static and dynamic light scattering respectively, on ultrasonic treatment of a polymer of Mw = 2.2 X10. Both Mw and dz decrease first abruptly but then... 

The experimental techniques for the study of conformational branched properties in solution are the same as used for linear chains. These are, in particular, static and dynamic light scattering, small angle X-ray (SAXS) and small angle neutron (SANS) scattering methods, and common capillary viscometry. These methods are supported by osmotic pressure measurements and, nowadays extensively applied, size exclusion chromatography (SEC) in on-line combination with several detectors. These measurements result in a list of molecular parameters which are given in Table 1. 

Y. Li, J. Xia, and P.L. Dubin Complex Formation Between Polyelectrolyte and Oppositely Charged Mixed Micelles Static and Dynamic Light Scattering. Study of the Effect of Polyelectrolyte Molecular Weight and Concentration. Macromolecules 27, 7049 (1994). 

Murphy, R.M. (1997). Static and dynamic light scattering of biological macromolecules what can we learn Current Opinion in Biotechnology, 8, 25-30. 

Figure 6.2 Effect of sucrose on the self-assembly / disassembly of sodium caseinate in aqueous medium (ionic strength = 0.01 mol/diu3, 22 °C) on the basis of combined static and dynamic light scattering. Upper plots refer to pH > pI, i.e.. ( ) pH = 7.0, ( ) pH = 6.0, (A) pH = 5.5 (a) weight-average molar weight, A/w (b) structure-sensitive parameter p. Lower plots refer to pH < p/, i.e., ( ) pH = 3.9, (A) pH = 3.5 (c) weight-average molar weight, A/w (d) structure-sensitive parameter p.

HadjSadok, A., Pitkowski, A., Nicolai, T., Benyahia, L., Moulai-Mostefa, N. (2008). Characterization of sodium caseinate as a function of ionic strength, pH and temperature using static and dynamic light scattering. Food Hydrocolloids, 22, 1460-1466. 

Particle size measurement is one of the essential requirements in almost all uses of colloids. However, our discussion in Section 1.5 makes it clear that this is no easy task, especially since even the definition of particle size is difficult in many cases. A number of techniques have been developed for measuring particle size and are well documented in specialized monographs (e.g., Allen 1990). Optical and electron microscopy described in the previous section can be used when ex situ measurements are possible or can be acceptable, but we also touch on a few nonintrusive methods such as static and dynamic light scattering (Chapter 5) and field-flow fractionation (see Vignette II Chapter 2) in other chapters. 

Turbidity measurements, static and dynamic light scattering, and a brief introduction to x-ray and neutron scattering (Chapter 5)... 

Static and Dynamic Light Scattering and Other Radiation Scattering... 

Standard static and dynamic light scattering methods assume that there is very little multiple scattering by the particles, that is, the dispersion has to be sufficiently dilute so that the photons are scattered only once as they pass through the sample. Is there a way to look inside a dispersion that is cloudy or milky, such as a foam, and to extract information on the local structure and its kinetics and relaxation Or, is it possible to tailor a dispersion so that... 

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