Extraction and characterization of cellulose nanocrystals from post-consumer wood fiberboard waste

This study investigates the potential of wood wastes, specifically post-consumer fiberboards, as a new source for cellulose nanocrystals (CNC). This underused resource has currently no commercially viable way to recycle it and so the volumes of fiberboard waste are growing rapidly. A sequential chem...

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Bibliographic Details
Published in:Cellulose (London) 2017-05, Vol.24 (5), p.2125-2137
Main Authors: Couret, Laetitia, Irle, Mark, Belloncle, Christophe, Cathala, Bernard
Format: Article
Language:English
Subjects:
Bioorganic Chemistry
Bleaching
Cellulose
Cellulose fibers
Cellulosic resins
Ceramics
Chemical composition
Chemical fractionation
Chemistry
Chemistry and Materials Science
Composites
Contaminants
Fiberboard
Finishes
Fractionation
Glass
Laminates
Life Sciences
Nanocrystals
Natural Materials
Organic Chemistry
Original Paper
Physical Chemistry
Polymer Sciences
Polymers
Sustainable Development
Varnishes
Wastes
Wood fibers
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Summary:This study investigates the potential of wood wastes, specifically post-consumer fiberboards, as a new source for cellulose nanocrystals (CNC). This underused resource has currently no commercially viable way to recycle it and so the volumes of fiberboard waste are growing rapidly. A sequential chemical fractionation was used to separate the three main constituents of wood, namely cellulose, hemicelluloses and lignin, and the non-wood components present in fiberboards, such as resins and finishes (e.g. varnishes, paints, plastics, laminates, etc.). Most of the non-cellulosic components and non-wood elements were removed by an alkali treatment followed by bleaching, resulting in a cellulosic fraction which is suitable for the further isolation of CNC by an acid hydrolysis step. The intermediate and final products were characterized by chemical composition, microscopic, spectroscopic and X-ray diffraction methods. The CNC obtained from wood waste are totally devoid of traces of contaminants and possess comparable characteristics and quality to those extracted from virgin wood fibers. The results indicate that fiberboard wastes can be used as promising alternative source for nanocelluloses production.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-017-1252-7