Isolation of cellulose nanocrystals from Bambusa vulgaris pulp via physio-chemical approach

This work reports the use of Bambusa vulgaris bamboo fibers (BF) as a biomass source for obtaining cellulose nanocrystals (CNCs). The fibers were first subjected to an alkali treatment, followed by bleaching and subsequent acid hydrolysis with concentrated sulfuric acid. The materials were chemicall...

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Bibliographic Details
Published in:Biomass conversion and biorefinery 2024-07, Vol.14 (13), p.14153-14162
Main Authors: Bosenbecker, Mariane Weirich, Maron, Guilherme Kurz, Alano, José Henrique, Marini, Juliano, de Oliveira, Amanda Dantas
Format: Article
Language:English
Subjects:
Bamboo
Biotechnology
Bleaching
Cellulose
Cellulose fibers
Differential scanning calorimetry
Energy
Fourier transforms
Hydrolysis
Infrared analysis
Infrared spectroscopy
Nanocomposites
Nanocrystals
Original Article
Renewable and Green Energy
Scanning electron microscopy
Sulfuric acid
Thermal stability
Thermogravimetric analysis
X-ray diffraction
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Summary:This work reports the use of Bambusa vulgaris bamboo fibers (BF) as a biomass source for obtaining cellulose nanocrystals (CNCs). The fibers were first subjected to an alkali treatment, followed by bleaching and subsequent acid hydrolysis with concentrated sulfuric acid. The materials were chemically characterized according to TAPPI standards. Moreover, their structural, thermal and morphologic characteristics were studied through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). FTIR and XRD results demonstrated a reduction in non-cellulosic constituents and an increase in crystallinity after bleaching and acid hydrolysis. TGA and DSC analysis revealed a good thermal stability of CNCs. From SEM and TEM images, defibrillation of the fibers occurred, and the CNCs have a needle/time-like structure with nanometer dimensions. These results confirm the production of CNCs with high potential for application in nanocomposites. These results confirm the production of CNCs with high potential for application in nanocomposites.
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-022-03651-2