Abstract
TMAOH-dispersed nanoparticles of magnetite were first prepared through the reduction–precipitation of ferric chloride with Na2SO3 and NH4OH. The TMAOH-dispersed (Fe3O4) magnetic nanoparticles were then surface-coated with poly(L-co-D,L lactic acid-co-trimethylene carbonate) (PLDLA-co-TMC) to obtain the corresponding hybrid system (Fe3O4/TMAOH/PLDLA-co-TMC). Samples of so prepared material were analyzed by Fourier-transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), magnetization measurements up to 2.5 T, and Mössbauer spectroscopy. Results indicate that this magnetic iron oxide soon after the synthesis is structurally close enough to a typically pure stoichiometric magnetite. FTIR data support clears evidences confirming the efficiency of the solvent displacement method to assure coating the TMAOH-dispersed (Fe3O4) magnetic nanoparticles with the terpolymer while preserves the main chemical structural characteristic of the nanosized magnetite.
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Acknowledgements
JD Fabris and LCD Cavalcante are indebted to the Brazilian National Council for the Scientific and Technological Development (CNPq), for the financial support under the grants # 304958-2017-4 and # 313431/2017-5, respectively. The Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES) granted a DSc studenship to VO Machado at Military Insitute of Engineering (Brazil).
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This article is part of the Topical Collection on Proceedings of the 16th Latin American Conference on the Applications of the Mössbauer Effect (LACAME 2018), 18-23 November 2018, Santiago de Chile, Chile
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de Oliveira Machado, V., Andrade, Â.L., Cavalcante, L.C.D. et al. A novel hybrid nanoparticle based on Fe3O4/TMAOH/poly(L-co-D,L lactic acid-co-trimethylene carbonate) prepared through the solvent displacement method. Hyperfine Interact 240, 21 (2019). https://doi.org/10.1007/s10751-019-1558-y
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DOI: https://doi.org/10.1007/s10751-019-1558-y