Abstract
The manuscript focuses on the dispersion of magnetic nanoparticles within self-assembling block copolymers, on the preferential localization of nanoparticles and on the effect of their concentration on the magnetic properties of the nanocomposites and on the self-assembly features of the matrix. Carbon-coated nickel nanoparticles dispersed within polystyrene–block polyisoprene–block polystyrene have been investigated by Raman, X-ray, SQUID, differential scanning calorimetry, and electron microscopy. The effect of nanofiller on the self-assembly features of the block copolymer is reported. Preferential localization of nanofiller within the soft phase was noticed below 20 wt% nanofiller. Higher loadings with nanoparticles showed an uniform distribution of nanofiller within the block copolymer, consistent with the destruction of self-assembly. The effect of nanoparticles’ concentration on blocking temperature is discussed.
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Acknowledgements
The research was performed in part in the Nebraska Nanoscale Facility: National Nanotechnology Coordinated Infrastructure and the Nebraska Center for Materials and Nanoscience, which are supported by the National Science Foundation under Award ECCS: 1542182, and the Nebraska Research Initiative. NSF DMR 1040419 MRI Grant “Acquisition of an Environmental Scanning Electron Microscope” is also acknowledged. UTRGV acknowledges the Department of Defense Grant “Raman Spectrometer for the Characterization of Advanced Materials and Nanomaterials,” W911NF-15-1-0063 and the NSF DMR-1523577: UTRGV-UMN Partnership for Fostering Innovation by Bridging Excellence in Research and Student Success.
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Jin, Y., Valloppilly, S., Chipara, D.M. et al. On polystyrene–block polyisoprene–block polystyrene filled with carbon-coated Ni nanoparticles. J Mater Sci 52, 2452–2459 (2017). https://doi.org/10.1007/s10853-016-0539-7
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DOI: https://doi.org/10.1007/s10853-016-0539-7