Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Quantitative Analysis of ″Polymer-Balls″ in Aqueous Solutions by Small-Angle Neutron Scattering

  • Shibayama, Mitsuhiro (Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo) ;
  • Okabe, Satoshi (Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo) ;
  • Nagao, Michihiro (Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo) ;
  • Sugihara, Shinji (Department of Macromolecular Science, Graduate School of Science, Osaka University) ;
  • Aoshima, Sadahito (Department of Macromolecular Science, Graduate School of Science, Osaka University) ;
  • Harada, Tamotsu (Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University) ;
  • Matsuoka, Hideki (Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University)
  • Published : 2002.12.01
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Abstract

The quantitative analysis of polymer micelles consisting of amphiphilic block copolymers was carried out by small-angle neutron scattering (SANS). The block copolymers, made of poly(2-ethoxyethyl vinyl ether-b-2-hydroxyethyl vinyl ether)(poly(EOVE-b-HOVE)), exhibited a sharp morphological transition from a homogeneous solution to a micelle structure with increasing temperature. This transition is accompanied by a formation of spherical domains of poly(EOVE) with a radius around 200 $\AA$. The variations of the size and its distribution of the domains were investigated as a function of polymer concentration and temperature. The validity of SANS analysis, including the wavelength- and incident-beam-smearing effects of the SANS instrument, was examined with a pre-calibrated polystyrene latex.

Keywords

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