Light scattering polymer solution

We consider an experiment in which a monochromatic laser beam (with a frequency of the order of 10 s ) is incident into a small volume in a dilute polymer solution. Light scattered from that volume is received by a detector... 

In order to understand polymer solution behaviour, the samples have to be characterised with respect to their molecular configuration, their molar mass and polydispersity, the polymer concentration and the shear rate. Classical techniques of polymer characterisation (light scattering, viscometry, ultracentrifugation, etc.) yield information on the solution structure and conformation of single macromolecules, as well as on the thermodynamic interactions with the solvent. In technical concentrations the behaviour of the dissolved polymer is more complicated because additional intramolecular and intermolecular interactions between polymer segments appear. 

This expression provides us with a way to determine molecular weights of polymers from light scattering of polymer solutions as shown below. 

The conformational properties of polymer chains [1-4] are usually determined in dilute solutions of the polymers. Viscosity, light scattering, small-angle x-ray scattering, and osmotic pressure, are the main types of measurements made in solution. 

This expression provides us with a way to determine molecular weights of polymers from Light scattering of polymer solutions as shown below. Moreover, a comparison of Eqs. (4.74) and (4.63) shows that the relationship between the turbidity and the Rayleigh ratio is... 

FAN Fang, T., Buo, S., Xie, H., Zhang, W., and Yrr, L., Water-solrrble and amphiphihc polymers. 4. Light scattering studies of some dilute solutions of PEO-PSt-PEO... 

Dilute solution light scattering and gel permeation chromatographic studies (performed in 1-chloronaphthalene at 220°C), and the inherent viscosity (performed in 1-chloronaphthalene at 206°C) is 0.16. The polymer is as polymerized, just before the curing step... 

Recently R. Kuhn etal.( 968a, b Kuhn, 1968) studied the phase relationships of polystyrene-poly(methyl methacrylate) by employing an ingenious dilute solution light-scattering technique. Equations derived from phase separation quantities could be extrapolated to the pure phases, yielding the conclusion that if both polymers had molecular weights less than about... 

Viscosity average molecular mass correlates with the ability of the polymer solution to flow because "a" is a crude measure of hydrodynamic volume of the polymer molecules in the solution and this volume controls solution viscosity. When the capacity of the polymer solution to scatter light is measured, it will not depend on... 

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

Nagasawa, M., and A. Takahashi, 1972, Light scattering from polyelectrolyte solutions. Light scattering from polymer solutions, ed. M.B. lluglin (Acadennic Press, London, New York) p. 671. 

In equation (11), 6 is the scattering angle, and X is the radiation wavelength in the polymer solution. The scattered light spectrum produced by a polymer solution depends upon the mass, polarizability and number of polymer coils in the solution, and the magnitude of the scattering field vector. 

There are already vast numbers of reviews, monographs, edited collections, conference proceedings, and web pages on polymer diffusion, light scattering, electrophoresis, rheology, and almost every topic I cover, other than optical probe diffusion. Why does the world need another book about polymers in solution ... 

In standard light scattering experiments on polymer solutions, absolute scattering intensities are usually determined since this is necessary for the determination of molar masses. Measurements of absolute intensities also provide additional information in X-ray or neutron diffraction studies on multicomponent and multiphase polymer systems. In the following, we will give the equations to be used. 

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