The IntraPC forming asymmetric PAAm-b-PEO-b-PAAm triblock copolymers (TBCs) composed of poly(ethylene oxide) (Mv=6 center dot 103 and 1.4 center dot 104) and polyacrylamide of a variable chain length form ohairy-typeo micelles in water and oflower-likeo micelles at the addition of EtOH40 vol %. The specific micellization is developed in TBC aqueous/ethanol solutions (EtOH content30 vol %) at the PS introduction. It is caused by the binding of PS with TBC micelles due to hydrogen bonds and hydrophobic interactions. The amorphous structure of TBCs and polymorphic crystalline structures of PS are found. The products of the interaction of TBC and PS contain highly ordered crystalline structures of the drug. But it is possible to avoid the drug crystallization at low PS contents.