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Macromolecules 1996, 29, 220-227
Formation and Properties of Polystyrene-block-poly(2-hydroxyethyl methacrylate) Micelles Guojun Liu,* Carl K. Smith,† Nanxing Hu, and Jian Tao Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada T2N 1N4 Received March 21, 1995; Revised Manuscript Received October 11, 1995X ABSTRACT: Polystyrene-block-poly(2-hydroxyethyl methacrylate) (PS-b-PHEMA) samples of different molar masses have been synthesized. These polymers formed micelles in THF/cyclohexane mixtures. The change in the hydrodynamic radius and aggregation number of these micelles as a function of cyclohexane volume fraction fc has been investigated. We also report some preliminary fluorescence results of pyrene- and fluorene-labeled PS-b-PHEMA. The increase in energy transfer from fluorene, attached randomly at a density of
