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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Key role of the hemicellulose content and the cell morphology on the nanofibrillation effectiveness of cellulose pulps
Cellulose, Volume 20, No. 6, Year 2013
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Description
The effect of the hemicellulose content and that of the fibre morphology on the nanofibrillation behaviour of delignified cellulose pulps were studied. For this purpose, pulps from two non-woody plants, alfa (Stipa tenacissima) and sunflower (Helianthus annuus), were delignified using NaClO2/acetic acid and the NaOH pulping processes to obtain fibres with different hemicellulose contents. The ensuing fibres were characterized by chemical analysis, SEM, FTIRS and X-ray diffraction. The fibres were then disintegrated into nanofibrillated cellulose (NFC) using either a high pressure homogenizer or a domestic blender. The degree of fibrillation and the morphology of the nanofibrillated fractions were evaluated by centrifugation and Field-emission scanning electron microscopy. Pulps containing the highest hemicellulose content showed higher yields of the nanofibrillated fraction and a better aptitude for the individualization of the microfibrils. Furthermore, it was shown that fibres from sunflowers exhibiting a thinner cell wall were easier to fibrillate and could be disintegrated into NFC by just using a simple domestic-blender once deliginification process was carried out using the NaClO2/acetic acid method. Eucalyptus fibres were also used to further confirm the key role of hemicelluloses in the nanofibrillation process of woody plants. © 2013 Springer Science+Business Media Dordrecht.
Authors & Co-Authors
Chaker, Achraf
Tunisia, Sfax
University of Sfax
Alila, Sabrine
Tunisia, Sfax
University of Sfax
Mutjé, Peré
Spain, Girona
Universitat de Girona
Rei-Vilar, Manuel
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Boufi, Sami
Tunisia, Sfax
University of Sfax
Statistics
Citations: 146
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1007/s10570-013-0036-y
ISSN:
09690239
Research Areas
Environmental