@misc{10481/67935,
year = {2020},
month = {2},
url = {http://hdl.handle.net/10481/67935},
abstract = {This study investigated the steady shear flow and viscoelastic properties of composite materials elaborated by introduction
of positively charged polyol-made maghemite nanoparticles (NPs) in aqueous solutions of negatively charged
sodium alginate polymers. Two different ligands were covalently attached to the particle surface, the 3-aminopropyl
triethyloxysilane (APTES) and the 3,4-dihydroxyphenylethylamine (DOPA), and their effect on the general rheological
and magneto-rheological behaviors of the resulting composites was highlighted. Indeed, the experiments revealed that
the increase of low shear viscosity and the viscoelastic moduli in the linear viscoelastic domain can be correlated to the
nature of the two ligands inducing either compact or loose aggregates between positively charged NPs and negatively
charged biopolymer chains. These field-induced microstructures have been qualitatively observed by optical microscopy
under applied magnetic field.},
organization = {M.T. Lopez-Lopez received financial support by
project FIS2017-85954-R (Ministerio de Economía, Industria y
Competitividad, MINECO, and Agencia Estatal de Investigación, AEI,
Spain, cofunded by Fondo Europeo de Desarrollo Regional, FEDER,
European Union).},
title = {Rheological investigation of magnetic sensitive biopolymer composites: effect of the ligand grafting of magnetic nanoparticles},
doi = {10.1007/s00397-020-01191-y},
author = {Varela-Feijoo, Alberto and López López, Modesto Torcuato and Galindo González, Cecilia and Stange, Stéphanie and Nguyen, Thi Thuy and Mammeri, Fayna and Ammar-Merah, Souad and Ponton, Alain},
}