Szczegóły publikacji
Opis bibliograficzny
Hydrophobically coated superparamagnetic iron oxides nanoparticles incorporated into polymer-based nanocapsules dispersed in water / Elżbieta GUMIENICZEK-CHŁOPEK, Joanna Odrobińska, Tomasz STRĄCZEK, Agnieszka RADZISZEWSKA, Szczepan Zapotoczny, Czesław KAPUSTA // Materials [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1996-1944. — 2020 — vol. 13 iss. 5 art. no. 1219, s. 1–15. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 12–15, Abstr. — Publikacja dostępna online od: 2020-03-09. — E. Gumieniczek-Chłopek – dod. afiliacja: Jagiellonian University
Autorzy (6)
- AGHGumieniczek-Chłopek Elżbieta
- Odrobińska Joanna
- AGHStrączek Tomasz
- AGHRadziszewska Agnieszka
- Zapotoczny Szczepan
- AGHKapusta Czesław
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 128255 |
|---|---|
| Data dodania do BaDAP | 2020-04-09 |
| Tekst źródłowy | URL |
| DOI | 10.3390/ma13051219 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Materials |
Abstract
This paper reports the characterization of iron oxide magnetic nanoparticles obtained via the thermal decomposition of an organometallic precursor, which were then loaded into nanocapsules prepared via the emulsification process in the presence of an amphiphilic derivative of chitosan. The applied synthetic method led to the formation of a hydrophobic layer on the surface of nanoparticles that enabled their loading in the hydrophobic liquid inside of the polymer-based capsules. The average diameter of nanoparticles was determined to be equal to 15 nm, and they were thoroughly characterized using X-ray diffraction (XRD), magnetometry, and Mössbauer spectroscopy. A core–shell structure consisting of a wüstite core and maghemite-like shell was revealed, resulting in an exchange bias effect and a considerable magnetocrystalline anisotropy at low temperatures and a superparamagnetic behavior at room temperature. Importantly, superparamagnetic behavior was observed for the aqueous dispersion of the nanocapsules loaded with the superparamagnetic nanoparticles, and the dispersion was shown to be very stable (at least 48 weeks). The results were analyzed and discussed with respect to the potential future applications of these nanoparticles and nanocapsules based on biopolymers as platforms designed for the magnetically navigated transport of encapsulated hydrophobic substances.