Algerian Journal of Materials Chemistry
Volume 2, Numéro 2, Pages 62-69
2019-08-29

Comparative Study Of Extraction Of Cellulose Nanocrystals (cnc) From Wood Pulp



Authors : Benchikh Lilia . Merzouki Abdelhafid .

Abstract

The present work is a study on cellulose nanocrystals extracted from the wood Pulp of the joineries in order to exploit this cellulosic waste (recycling). After a bibliographic study, we selected four different extraction technics to be followed. The extracts obtained have undergone several physical and structural characterizations to evaluate the influence of the extraction method on the yield in quality and quantity of the CNCs. Fourier transform infrared spectroscopy (FT-IR) was used to highlight the evolution of the chemical composition thus confirming the elimination of extracellulosic substances during the chemical treatment of the extraction process. X-ray diffraction analysis determined the crystallinity of the CNC. According to the results of the thermogravimetric analyzes, the degradation of the CNCs occurs at a low temperature in the region of 200 ° C. The morphology of cellulose nanocrystals has been studied by optical microscopy.

Keywords

biopolymer, biomass, cellulose, cellulose nanocrystals, whiskers.

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