Loading Effect of Sol-Gel Derived Barium Hexaferrite on Magnetic Polymer Composites
| Autor: | Chesta Ruttanapun, Pongsakorn Jantaratana, Chitnarong Sirisathitkul, Wannisa Thongsamrit, Thanida Charoensuk |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering 02 engineering and technology rare-earth-free magnet 01 natural sciences Article lcsh:Chemistry chemistry.chemical_compound barium hexaferrite 0103 physical sciences General Materials Science Composite material sol-gel auto-combustion Saturation (magnetic) Sol-gel 010302 applied physics acrylonitrile-butadiene-styrene Acrylonitrile butadiene styrene magnetic polymer composite Coercivity 021001 nanoscience & nanotechnology Casting lcsh:QD1-999 chemistry Magnet Ferrite (magnet) Nanorod 0210 nano-technology |
| Zdroj: | Nanomaterials Nanomaterials, Vol 11, Iss 558, p 558 (2021) Volume 11 Issue 3 |
| ISSN: | 2079-4991 |
| Popis: | Solution–processing methods were investigated as viable alternatives to produce the polymer-bonded barium hexaferrite (BaM). BaM powders were first synthesized by using the sol-gel auto-combustion method. While the ignition period in two synthesis batches varied, the morphology of hexagonal microplates and nanorods, as well as magnetic properties, were reproduced. To prepare magnetic polymer composites, these BaM powders were then incorporated into the acrylonitrile-butadiene-styrene (ABS) matrix with a weight ratio of 80:20, 70:30, and 60:40 by using the solution casting method. Magnetizations were linearly decreased with a reduction in ferrite loading. Compared to the BaM loose powders and pressed pellet, both remanent and saturation magnetizations were lower and gave rise to comparable values of the squareness. The squareness around 0.5 of BaM samples and their composites revealed the isotropic alignment. Interestingly, the coercivity was significantly increased from 1727–1776 Oe in loose BaM powders to 1874–2052 Oe for the BaM-ABS composites. These composites have potential to be implemented in the additive manufacturing of rare-earth-free magnets. |
| Databáze: | OpenAIRE |
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