Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/48478

TitleMagnetic cellulose nanocrystal nanocomposites for the development of green functional materials
Author(s)Lizundia, E.
Maceiras, A.
Vilas, J. L.
Martins, Pedro Libânio Abreu
Lanceros-Méndez, S.
KeywordsCellulose nanocrystals
Biopolymers
Ferrites
Electroactive materials
Nanocomposites
Issue dateNov-2017
PublisherElsevier
JournalCarbohydrate Polymers
CitationLizundia, E., Maceiras, A., Vilas, J. L., Martins, P., & Lanceros-Mendez, S. (2017). Magnetic cellulose nanocrystal nanocomposites for the development of green functional materials. Carbohydrate polymers, 175, 425-432
Abstract(s)A magnetic cellulosic material composed of cellulose nanocrystals (CNC) and cobalt ferrite (CoFe2O4) nanoparticles was developed through evaporation-induced self-assembly (EISA). Nanoparticles demonstrated good dispersibility within the cellulose nanocrystal template. The addition of glucose to CNC network allows the development of homogeneous crack-free CNC-based films and does no modify neither the morphology nor the optical properties. In contrast, the introduction of CoFe2O4 nanoparticles produces a marked decrease in the amount of the transmitted light. 20 wt.% of CoFe2O4 nanoparticles inside the CNC matrix induced a maximum magnetization value of 12.96 emu g−1, increased the real part of the dielectric constant (permittivity) from 10 (pure CNC film) to 12 and improved the thermostability of the nanocomposite as evidenced by the increase of the onset temperature from 165.1 to 220.4 °C. Those features obtained in a non-petroleum-based composite provide insight into the development of the next generation of functional materials from natural origin.
TypeArticle
URIhttp://hdl.handle.net/1822/48478
DOI10.1016/j.carbpol.2017.08.024
ISSN0144-8617
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S0144861717308913
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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