Electrospun Polyvinylpyrrolidone Fibers with High Concentrations of Ferromagnetic and Superparamagnetic Nanoparticles
| Autor: | Robert J. Linhardt, Minoru Miyauchi, Jonathan S. Dordick, Udayanath Aich, Jennifer E. Gagner, Zachary Shriver, Trevor J. Simmons, Jianjun Miao |
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| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Materials science Polyvinylpyrrolidone Physics::Optics Nanoparticle Polymer Superparamagnetic nanoparticles Coupling (electronics) Condensed Matter::Materials Science Magnetization chemistry Ferromagnetism Chemical engineering medicine General Materials Science medicine.drug Superparamagnetism |
| Zdroj: | ACS Applied Materials & Interfaces. 3:1958-1964 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/am200187x |
| Popis: | Electrospun polymer fibers were prepared containing mixtures of different proportions of ferromagnetic and superparamagnetic nanoparticles. The magnetic properties of these fibers were then explored using a superconducting quantum interference device. Mixed superparamagnetic/ferromagnetic fibers were examined for mesoscale magnetic exchange coupling, which was not observed as theoretically predicted. This study includes some of the highest magnetic nanoparticle loadings (up to 50 wt %) and the highest magnetization values (≈ 25 emu/g) in an electrospun fiber to date and also demonstrates a novel mixed superparamagnetic/ferromagnetic system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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