RT Journal Article
T1 Influence of magnetic nanoparticles on the mechano-magnetic response of wet-spun sodium alginate-nanocellulose filaments
A1 Alves, Lisandra Cristina de Castro
A1 Wang, Ling
A1 González Gómez, Manuel Antonio
A1 García Acevedo, Pelayo
A1 Arnosa Prieto, Ángela
A1 Borghei, Maryam
A1 Piñeiro Redondo, Yolanda
A1 Rojas, Orlando J.
A1 Rivas Rey, José
K1 Coagulation
K1 Coaxial filaments
K1 Filaments
K1 Magnetic filaments
K1 Nanocellulose
K1 Wet spinning
AB Hybrid filaments are of growing interest for a wide range of applications, including those that require stimuli-responsiveness. In this study we developed magnetic filaments by combining the properties of inorganic nanoparticles with the low density, flexibility and morphological features of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNF). The hybrid filaments were synthesized by wet spinning of TOCNF using sodium alginate (SA) adjuvant in a hydrogel containing magnetite (Fe3O4) nanoparticles (NPs) formed in-situ by nucleation and grow. The relationship between synthesis conditions and filament mechanical and magnetic properties were investigated at NP loading as high as 25%. Saturation magnetization of 1.60, 11.31, 19.41, and 33.25 emu/g Fe3O4 were measured at 5, 10, 15, and 25% NPs with a penalty in filament tensile strength which nevertheless reached at least 118 GPa along with low magnetite crystal orientation. Such high strength is rarely reported and found to depend on cellulose crystal orientation. The magnetic filaments were found suitable to replace traditional magnetic systems but add to the opportunity to develop flexible microwave adsorption textiles, artificial muscles, and micro-sensors.
PB Springer
SN 1572-882X
SN 0969-0239
YR 2024
FD 2024-11-16
LK https://hdl.handle.net/10347/44232
UL https://hdl.handle.net/10347/44232
LA eng
NO de Castro-Alves, L., Wang, L., González-Goméz, M. A., Garcia-Acevedo, P., Arnosa-Prieto, Á., Borghei, M., Piñeiro-Redondo, Y., Rojas, O. J., & Rivas, J. (2025). Influence of magnetic nanoparticles on the mechano-magnetic response of wet-spun sodium alginate-nanocellulose filaments. Cellulose, 32(1), 211-227. https://doi.org/10.1007/S10570-024-06291-Z
NO The authors would like to acknowledge financial support from the Spanish Ministry of Science and Innovation under the grant (PID2020-112626RBC21), in the categories of «Research Challenges» and «Knowledge Generation», the Regional Consellería de Innovacion Program for the Grupos de Referencia Competitiva 2021 – RC2021 project of Xunta de Galicia, the Canada Excellence Research Chair Program (CERC-2018–00006), Canada Foundation for Innovation (Project 38623) and Pacific Economic Development Canada (PacifiCAN).
DS Minerva
RD 28 abr 2026