1. Micelles of a Diblock Copolymer of Styrene and Ethylene Oxide in Mixtures of 2,6-Lutidine and Water
- Author
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Frédéric Nallet, Jaroslav Kriz, Laurence Noirez, Tuzar Z, Petr Stepanek, Petr Kadlec, Institute of Macromolecular Chemistry of the Czech Academy of Sciences (IMC / CAS), Czech Academy of Sciences [Prague] (CAS), Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay
- Subjects
Diblock copolymer ,Materials science ,Diffusion ,Inorganic chemistry ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Micelle ,Styrene ,chemistry.chemical_compound ,Electrochemistry ,Copolymer ,General Materials Science ,Spectroscopy ,Micelles ,Ethylene oxide ,Surfaces and Interfaces ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Small-angle neutron scattering ,0104 chemical sciences ,Solvent ,[CHIM.POLY]Chemical Sciences/Polymers ,chemistry ,Chemical engineering ,Styrene : Ethylene ,Polystyrene ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
3 pages; International audience; We studied the micelle formation of a diblock copolymer of styrene and ethylene oxide in mixtures of 2,6- dimethylpyridine (2,6-lutidine) and water. Micelles are formed in a broad solvent composition range with a volume fraction of water ranging from 0.05 to 0.85, where neither polystyrene nor polyethylene oxide homopolymers are soluble. The diffusion behavior of pure solvent mixtures and in solutions of copolymer micelles is reported. In LTD/water mixtures, two diffusive processes corresponding to self-difusion and two modes belonging to mutual diffusion and diffusion of solvent clusters have been found. In copolymer solutions, the mode of copolymer micelle diffusion replaces the mode of solvent cluster diffusion. Quasielastic light scattering, small-angle neutron scattering, and pulsed-field gradient NMR have been employed in our study.
- Published
- 2008
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