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Polymeric nanoparticles stabilized by surfactants investigated by light scattering, small-angle neutron scattering, and Cryo-TEM methods

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    0359807 - ÚMCH 2012 RIV US eng J - Journal Article
    Pánek, Jiří - Filippov, Sergey K. - Koňák, Čestmír - Nallet, F. - Noirez, L. - Karlsson, G. - Štěpánek, Petr
    Polymeric nanoparticles stabilized by surfactants investigated by light scattering, small-angle neutron scattering, and Cryo-TEM methods.
    Journal of Dispersion Science and Technology. Roč. 32, č. 6 (2011), s. 888-897. ISSN 0193-2691. E-ISSN 1532-2351
    R&D Projects: GA ČR GA202/09/2078
    Institutional research plan: CEZ:AV0Z40500505
    Keywords : Cryo-TEM * DLS * nanoparticles
    Subject RIV: BO - Biophysics
    Impact factor: 0.560, year: 2011

    We investigated self-organization of polymers with surfactants through solvent shifting process resulting in formation of stable and uniform nanoparticles. We studied polymeric nanoparticles made of poly(methylmethacrylate) and of polystyrene dispersed in water. We observed the formation of well defined nanoparticles by light scattering, small-angle neutron scattering (SANS), and cryogenic transmission electron microscopy (Cryo-TEM) methods. The study shows how nanoparticle properties are changed by the chemical composition of surfactants, molar mass of polymers, concentrations of both components. Dynamic light scattering (DLS) and static light scattering (SLS) provide the hydrodynamic radii and radii of gyration, cryo-TEM experiments prove that the nanoparticles have good spherical shape. Analysis of SANS data and cryo-TEM micrographs suggest that the prepared particles are composed of polymer and surfactant that are evenly distributed.
    Permanent Link: http://hdl.handle.net/11104/0197519

     
     
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