Small angle scattering study of poly(methylmethacrylate)-block-poly(ethylene oxide) block co-polymer in aqueous solution (Articolo in rivista)

Type
Label
  • Small angle scattering study of poly(methylmethacrylate)-block-poly(ethylene oxide) block co-polymer in aqueous solution (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • R. Triolo, F. Lo Celso, V. Benfante, A. Triolo, A. Wiedenmann and S. Bernstorff (2005)
    Small angle scattering study of poly(methylmethacrylate)-block-poly(ethylene oxide) block co-polymer in aqueous solution
    (literal)
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  • R. Triolo, F. Lo Celso, V. Benfante, A. Triolo, A. Wiedenmann and S. Bernstorff (literal)
Pagina inizio
  • 79 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 130 (literal)
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  • Istituto Processi Chimico-Fisici, Sezione di Messina – CNR, Messina, Italy Università di Palermo, Palermo (Italy) BENSC-HMI, Berlin (Germany) Elettra Synchrotron, Basovizza (Italy). (literal)
Titolo
  • Small angle scattering study of poly(methylmethacrylate)-block-poly(ethylene oxide) block co-polymer in aqueous solution (literal)
Abstract
  • A combined Small Angle X ray (SAXS) and Neutron (SANS) Scattering study of aqueous solutions of a symmetric block copolymer consisting of poly(methyl methacrylate) (PMMA) and poly(ethylene oxide) (PEO) moieties is presented. The polymer forms slightly polydisperse spherical micelles in a wide range of concentration (0.03-6.7% w/V) and temperature (20°C d T d 65 °C). A good description of the SANS data is obtained using a polydisperse core-shell model with a structure factor for a modified hard sphere potential. By increasing the concentration at constant T we observed a decrease of the aggregation number and an increase of solvation of PEO groups in the shell, opposite to what happens by increasing the temperature at constant concentration. (literal)
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