Micellization and Dynamics of a Block Copolymer

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Triblock copolymers of the type EPE, where E and P denote ethylene oxide and propylene oxide blocks, respectively, are industrially important copolymers often called Pluronics or Poloxamers. EPE copolymers form micelles with a core of P blocks and different micellar shapes depending on block length ratios and temperature. The micellization process with increasing temperature has been followed by a number of techniques including differential scanning calorimetry, liquid chromatography, and surface tension measurements. Different micellization models have been tested for purified copolymers and copolymer mixtures, and evidence in favor of a multi-equilibria unimer-micelle model will be presented. Results obtained by liquid chromatographic methods will be shown and it will be demonstrated that commercial EPE copolymers are inhomogeneous at several levels and many of their unusual properties reflect the presence of these impurities.
Original languageEnglish
Title of host publicationStructure and Dynamics of Self-organized Macromolecular Systems
Number of pages1
PublisherInstitute of Macromolecular Chemistry, Prague
Publication date2006
Publication statusPublished - 2006
EventMacromolecular Mini Symposium - Prague, Czech Republic
Duration: 10 Jul 200613 Jul 2006


ConferenceMacromolecular Mini Symposium
CountryCzech Republic

Cite this

Hvidt, S. (2006). Micellization and Dynamics of a Block Copolymer. In Structure and Dynamics of Self-organized Macromolecular Systems (pp. 47-47). Institute of Macromolecular Chemistry, Prague.