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 ≤ T ≤ 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.

R TRIOLO, LO CELSO F, V BENFANTE, A TRIOLO, A WIEDENMANN, S BERNSTORFF (2005). Small angle scattering study of poly(methylmethacrylate)-blockpoly(ethylene oxide) block co-polymer in aqueous solution, 130, 79-84 [10.1007/b107333].

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

TRIOLO, Roberto;LO CELSO, Fabrizio;BENFANTE, Valerio;TRIOLO, Alessandro;
2005-01-01

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 ≤ T ≤ 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.
2005
R TRIOLO, LO CELSO F, V BENFANTE, A TRIOLO, A WIEDENMANN, S BERNSTORFF (2005). Small angle scattering study of poly(methylmethacrylate)-blockpoly(ethylene oxide) block co-polymer in aqueous solution, 130, 79-84 [10.1007/b107333].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/12348
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