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ISOLATION AND CHARACTERIZATION OF NANOFIBRILLATED CELLULOSE FROM OAT HULLS

Química Nova, 2015-05, Vol.38 (4), p.478-482 [Peer Reviewed Journal]

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License. ;ISSN: 0100-4042 ;ISSN: 1678-7064 ;DOI: 10.5935/0100-4042.20150029

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  • Title:
    ISOLATION AND CHARACTERIZATION OF NANOFIBRILLATED CELLULOSE FROM OAT HULLS
  • Author: Paschoal, Giovanni B. ; Muller, Carmen M. O. ; Carvalho, Gizilene M. ; Tischer, Cesar A. ; Mali, Suzana
  • Subjects: agro-industrial residue ; CHEMISTRY, MULTIDISCIPLINARY ; microstructure ; nanocellulose
  • Is Part Of: Química Nova, 2015-05, Vol.38 (4), p.478-482
  • Description: The objectives of this work were to investigate the microstructure, crystallinity and thermal stability of nanofibrillated cellulose obtained from oat hulls using bleaching and acid hydrolysis at a mild temperature (45 ºC) followed by ultrasonication. The oat hulls were bleached with peracetic acid, and after bleaching, the compact structure around the cellulosic fibers was removed, and the bundles became individualized. The extraction time (30 or 60 min) did not affect the properties of the nanofibrillated cellulose, which presented a higher crystallinity index and thermal stability than the raw material (oat hulls). The nanocellulose formed interconnected webs of tiny fibers with diameters of 70-100 nm and lengths of several micrometers, producing nanofibers with a relatively high aspect ratio, thus indicating that these materials are suitable for polymer reinforcement.
  • Publisher: Sociedade Brasileira de Química
  • Language: English;Portuguese
  • Identifier: ISSN: 0100-4042
    ISSN: 1678-7064
    DOI: 10.5935/0100-4042.20150029
  • Source: Open Access: DOAJ Directory of Open Access Journals
    SciELO
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