Static and dynamic light scattering from multicomponent polymer mixtures PS/PDMS/PMMA/toluene

Abstract

The static and dynamic scattering properties of multicomponent polymer mixtures are examined starting from the theoretical formalism based on the random phase approximation (RPA) formulticomponent polymer mixtures in the presence of a low molecular weight solvent. The results are compared with the light scattering data reported recently by Strazielle and coworkers [ 11 for polystyrene/polydimethylsiloxane/polymethylmethac~late/toluene mixtures. The present paper is an extension of the work published recently by these authors [2] and considers data obtained from several concentrations of PMMA. It also includes a discussion of the dynamic properties which are obtained by quasi-elastic light scattering.

Dynamics in Multicomponent Polyelectrolyte Solutions

“…The arguments above are applicable to multicomponent polymer mixtures in general, including polyelectrolyte solutions. 23,24 The presence of polyelectrolytes in the multicomponent system and their unique properties necessitate further considerations. The dynamic scattering function for polyelectrolyte solutions has been theoretically investigated for several decades.…”

“…The arguments above are applicable to multicomponent polymer mixtures in general, including polyelectrolyte solutions. , The presence of polyelectrolytes in the multicomponent system and their unique properties necessitate further considerations. The dynamic scattering function for polyelectrolyte solutions has been theoretically investigated for several decades. ,− In summary, most developments − have been for weakly charged (flexible) polyelectrolyte solutions, and the left part of eq (the free-draining contribution) by itself is a reasonable approximation for the bare mobility.…”