Collect. Czech. Chem. Commun. 1993, 58, 2282-2289

Light Scattering from Polystyrene-block-poly(ethylene-co-propylene) in Decane and in Dioxane

Jaroslav Stejskala, Čestmír Koňáka, Martin Helmstedtb and Pavel Kratochvíla

a Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague, Czech Republic
b Universität Leipzig, Sektion Physik, D-04103 Leipzig, Germany


Polystyrene-block-poly(ethylene-co-propylene) solutions in decane have been investigated by dynamic and static light scattering. The dissolution of the diblock copolymer in a solvent, which is selective of aliphatic blocks, yields well-defined metastable micellar structures. These structures are converted into equilibrium micelles on heating and change into frozen micelles when cooled. A similar pattern is observed also in dioxane, which is a selective solvent for polystyrene blocks.