Abstract
AbstractSolubilization by micelles of a three‐block copolymer poly(styrene‐butadiene‐styrene) with a polybutadiene core was studied by the light scattering method on three types of solubilizate: polybutadiene with (a) low and (b) high molar mass (with respect to the polybutadiene block of the copolymer), and (c) a block copolymer poly(styrene‐butadiene‐styrene) with a high content of butadiene. True solubilization of polybutadiene into the cores of spherical micelles occurs in case (a); in case (b) polybutadiene forms partially stabilized, emulsion‐like large droplets. In case (c) stable mixed micelles are formed having either lower or higher molar mass with respect to that of the original micelles, depending on the ratio of molar masses and on the composition of both copolymers. A similarity between solubilization of hydrocarbons by micelles of soaps or surfactants in aqueous solutions and solubilization of polymers by copolymer micelles in selective solvents is pointed out.
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