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- W2947678377 abstract "This work reports on a simple and environmentally benign route to prepare freestanding magnetic films based on cellulose derivatives through the combination of cobalt ferrite (CoFe2O4) nanoparticles with methyl cellulose (MC), hydroxypropyl cellulose (HPC), and sodium carboxymethyl cellulose (NaCMC). Nanoparticles are able to “shield” hydrogen bonding interactions between polysaccharide chains and lower the viscosity of water-dissolved MC, HPC, and NaCMC, allowing an easy film fabrication. Crack-free films with homogeneously dispersed nanoparticles having concentrations up to 50 wt % are fabricated by mechanical agitation followed by doctor blade casting. All of the nanocomposite films keep a substantial level of flexibility with elongation at break exceeding 5%. Halpin–Tsai equations serve to provide further insights on the character of matrix–CoFe2O4 interfaces. Magnetization saturation increases almost linearly with cobalt ferrite concentration up to a maximum value of ∼24–27 emu g–1 for nanocomposites containing 50 wt % of nanoparticles. The dielectric response of the films demonstrates a strong dependence on both the functional groups attached to the main cellulose chain and the ferrite nanoparticle content. The renewable character of the hosting matrices, together with the fabrication methods that solely uses water as a solvent, the decrease of the viscosity with the inclusion of fillers, particularly suitable for printable materials, and the resulting magnetic performance provide novel avenues for the replacement of traditional magnetoactive composites based on petroleum-derived polymers and avoiding the use of toxic solvents." @default.
- W2947678377 created "2019-06-07" @default.
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- W2947678377 date "2019-05-31" @default.
- W2947678377 modified "2023-10-13" @default.
- W2947678377 title "Water-Soluble Cellulose Derivatives as Suitable Matrices for Multifunctional Materials" @default.
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- W2947678377 doi "https://doi.org/10.1021/acs.biomac.9b00574" @default.
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- W2947678377 hasPublicationYear "2019" @default.
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