Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-34984
Titel: | Induction heating induced self-healing of nanocomposites based on surface-functionalized cationic iron oxide particles and polyelectrolytes |
VerfasserIn: | Oberhausen, Bastian Kickelbick, Guido |
Sprache: | Englisch |
Titel: | Nanoscale Advances |
Bandnummer: | 3 |
Heft: | 19 |
Seiten: | 5589–5604 |
Verlag/Plattform: | Royal Society of Chemistry |
Erscheinungsjahr: | 2021 |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Supramolecular interactions represent versatile, reversible, and intrinsic mechanisms for bond formation after the failure of materials. Ionic interactions excel through high flexibility and binding strength. In this study, ionic interactions between polymer matrices and inorganic nanoparticles were used to induce self-healing properties. Random, anionic polyelectrolyte copolymers consisting of di(ethylene glycol) methyl ether methacrylate and sodium-4-(methacryloyloxy)butan-1-sulfonate were synthesized by atom transfer radical polymerization. Differential scanning calorimetry measurements confirmed the adjustability of the glass transition temperature via the polymer composition. Within the glass transition temperature window of the homopolymers from 23 C to 126 C, the range between 18 C to 50 C was examined, generating suitable matrices for self-healing. Superparamagnetic iron oxide nanoparticles with a size of 8 nm were synthesized by thermal decomposition of iron(III) acetylacetonate and used as the inorganic filler. Positive surface charges were introduced by functionalization with N,N,N-trimethyl6-phosphonhexan-1-aminium bromide. Functionalization was confirmed with FTIR, TGA, and zeta potential measurements. Ionic interactions between filler and polymer promote a uniform particle dispersion within the material. Self-healing experiments were performed at 80 C and without the addition of further healing agents. Utilizing the magnetic properties induced by the iron oxide nanoparticles, spatially resolved healing within an alternating magnetic field was achieved on a mm scale. |
DOI der Erstveröffentlichung: | 10.1039/D1NA00417D |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-349840 hdl:20.500.11880/31975 http://dx.doi.org/10.22028/D291-34984 |
ISSN: | 2516-0230 |
Datum des Eintrags: | 10-Nov-2021 |
Bezeichnung des in Beziehung stehenden Objekts: | Supplementary files |
In Beziehung stehendes Objekt: | https://www.rsc.org/suppdata/d1/na/d1na00417d/d1na00417d1.pdf?_ga=2.82220052.36947935.1636541029-1305800646.1636541028 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie |
Professur: | NT - Prof. Dr. Guido Kickelbick |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
d1na00417d.pdf | 2,07 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons