title: Dissolution of iron oxide nanoparticles inside polymer nanocapsules.
abstract: The structure of poly(organosiloxane) nanocapsules partially filled with iron oxide cores of different sizes was revealed by small angle X-ray scattering and X-ray diffraction. The nanocapsules are synthesized by the formation of a poly(organosiloxane) shell around iron oxide nanoparticles and the simultaneous partial dissolution of these cores. Due to the high scattering contrast of the iron oxide cores compared to the polymer shell, the particle size distribution of the cores inside the capsules can be measured by small angle X-ray scattering. Additional information can be revealed by X-ray diffraction, which gives insights into the formation of the polymer network and the structure of the iron oxide cores. The study shows how the crystallinity and size of the nanoparticles as well as the shape and width of the size distribution can be altered by the synthesis parameters.
authors: Fakultät Physik/DELTA, Technische Universität Dortmund, Otto-Hahn-Str. 4, D-44227 Dortmund, Germany. johannes.moeller@tu-dortmund.de
authors: Johannes
authors: J
authors: Möller
authors: Melek
authors: M
authors: Cebi
authors: Martin A
authors: MA
authors: Schroer
authors: Michael
authors: M
authors: Paulus
authors: Patrick
authors: P
authors: Degen
authors: Christoph J
authors: CJ
authors: Sahle
authors: D C Florian
authors: DC
authors: Wieland
authors: Sabine
authors: S
authors: Leick
authors: Alexander
authors: A
authors: Nyrow
authors: Heinz
authors: H
authors: Rehage
authors: Metin
authors: M
authors: Tolan
mesh_terms: D003460:Crystallization; D005290:Ferric Compounds / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D053838:Scattering, Small Angle; D012833:Siloxanes / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D005290:Ferric Compounds; D012833:Siloxanes; C000499:ferric oxide