Počet záznamů: 1  

Stabilization of aqueous dispersions of poly(methacrylic acid)-coated iron oxide nanoparticles by double hydrophilic block polyelectrolyte poly(ethylene oxide)-block-poly(N-methyl-2-vinylpyridinium iodide)

  1. 1.
    0466214 - ÚMCH 2018 RIV NL eng J - Článek v odborném periodiku
    Wozniak, E. - Špírková, Milena - Šlouf, Miroslav - Garamus, V. M. - Šafaříková, Miroslava - Šafařík, Ivo - Štěpánek, M.
    Stabilization of aqueous dispersions of poly(methacrylic acid)-coated iron oxide nanoparticles by double hydrophilic block polyelectrolyte poly(ethylene oxide)-block-poly(N-methyl-2-vinylpyridinium iodide).
    Colloids and Surfaces A-Physicochemical and Engineering Aspects. Roč. 514, 5 February (2017), s. 32-37. ISSN 0927-7757. E-ISSN 1873-4359
    Grant CEP: GA TA ČR(CZ) TE01020118; GA MŠMT(CZ) LO1507
    Institucionální podpora: RVO:61389013 ; RVO:60077344
    Klíčová slova: superparamagnetic iron oxide nanoparticles * polyelectrolytes * SAXS
    Obor OECD: Polymer science; Polymer science (BC-A)
    Impakt faktor: 2.829, rok: 2017

    Aqueous dispersions of poly(methacrylic acid)-coated superparamagnetic iron oxide nanoparticles (PMAA@SPIONs) and nanoparticles obtained by adding a layer of double-hydrophilic cationic block polyelectrolyte poly(ethylene oxide)-block-poly(N-methyl-2-vinylpyridinium iodide) (PEO-QP2VP) on PMAA@SPIONs were studied by a combination of static and dynamic light scattering, SAXS, transmission electron microscopy and atomic force microscopy, probing the structure of the SPION aggregates on the lengthscale from 1 to 103 nm. Both SALS and AFM results indicate that adding a PEO-QP2VP layer to PMAA@SPIONs decreases the size of SPION aggregates formed in the dispersions. While TEM micrographs show that PEO-QP2VP@PMAA@SPION particles are less apt to form small clusters with the size of several tens nm compared to PMAA@SPION particles, the local clustering has no effect on the power law scattering behavior (I(q) similar to q-1.4) of the SPION dispersions at longer lengthscales (tens to hundreds nm), which reflects mainly polydispersity of the aggregates.
    Trvalý link: http://hdl.handle.net/11104/0264767

     
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.