Monolithic magneto-optical nanocomposites of barium hexaferrite platelets in PMMA

Gregor Ferk (Author), Peter Krajnc (Author), Anton Hamler (Author), Alenka Mertelj (Author), Federico Cebollada (Author), Mihael Drofenik (Author), Darja Lisjak (Author)

Abstract

The incorporation of magnetic barium hexaferrite nanoparticles in a transparent polymer matrix of poly(methyl methacrylate) (PMMA) is reported for the first time. The barium hexaferrite nanoplatelets doped with Sc3+, i.e., BaSc0.5Fe11.5O12 (BaHF), having diameters in the range 20 to 130 nm and thicknesses of approximately 5 nm, are synthesized hydrothermally and stabilized in 1-butanol with dodecylbenzenesulfonic acid. This method enables the preparation of monolithic nanocomposites by admixing the BaHF suspension into a liquid monomer, followed by in-situ, bulk free-radical polymerization. The PMMA retains its transparency for loadings of BaHF nanoparticles up to 0.27 wt.%, meaning that magnetically and optically anisotropic, monolithic nanocomposites can be synthesized when the polymerization is carried out in a magnetic field. The excellent dispersion of the magnetic nanoparticles, coupled with a reasonable control over the magnetic properties achieved in this investigation, is encouraging for the magneto-optical applications of these materials.

Keywords

polymer composites;nanoparticles;polymethyl methacrylate;PMMA;

Data

Language:	English
Year of publishing:	2015
Typology:	1.01 - Original Scientific Article
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC:	66
COBISS:	18777878
ISSN:	2045-2322
Views:	898
Downloads:	398
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	polimerni kompoziti;nanodelci;polimetil metakrilat;PMMA;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 11395-1-11395-8
Volume:	ǂVol. ǂ5
Chronology:	jun. 2015
DOI:	10.1038/srep11395
ID:	9142707