Isolation and characterization of nanocrystalline cellulose from different precursor materials

Nanocrytalline cellulose (NCC) was isolated using cellulose extracted from two different precursor materials: Eucalyptus globulus and rice straw. The two ground precursor materials were autoclaved with a 10 % NaOH solution at 120 °C for 3 h. The alkali-treated precursor materials were bleached using...

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Bibliographic Details
Published in:Fibers and polymers 2017-02, Vol.18 (2), p.272-277
Main Authors: Lee, Byoung-Min, Jeun, Joon-Pyo, Kang, Phil-Hyun, Choi, Jae-Hak, Hong, Sung-Kwon
Format: Article
Language:English
Subjects:
Bleaching
Cellulose
Chemistry
Chemistry and Materials Science
Eucalyptus
Nanostructure
Polymer Sciences
Precursors
Sodium
Straw
Thermogravimetric analysis
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Summary:Nanocrytalline cellulose (NCC) was isolated using cellulose extracted from two different precursor materials: Eucalyptus globulus and rice straw. The two ground precursor materials were autoclaved with a 10 % NaOH solution at 120 °C for 3 h. The alkali-treated precursor materials were bleached using sodium chlorite/acetic acid and sodium hypochlorite. The bleached precursor materials were acid-hydrolyzed in 65 % (w/w) sulfuric acid at 45 °C for 30-120 min. The changes in the chemical composition of the two precursor materials were studied before and after bleaching by Fourier transform infrared spectroscopy according to the NREL report and TAPPI standards. Hydrolyzates were characterized by X-ray diffractometry, thermogravimetric analysis, Zeta-potential analysis, and transmission electron microscopy. The results revealed that the physical properties of NCC were strongly dependent on the acid-hydrolysis time.
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-017-6548-6