Journal
POWDER TECHNOLOGY
Volume 261, Issue -, Pages 232-240Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.powtec.2014.04.039
Keywords
Waste cotton fibers; Spherical nanoparticles; Enzymatic hydrolysis; Sonication
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Cellulose nanoparticles with spherical morphology were prepared through enzymatic hydrolysis of waste cotton fibers and sonication treatment. The nanoparticles were characterized with viscometer, field emission scanning electron microscope, particle size analyzer, Fourier Transform Infrared Spectroscopy, X-ray diffraction, and thermogravimetric analysis. The results indicated that the average particle size of cotton fibers after hydrolysis and sonication process was 0.526 mu m and less than 100 nm, respectively. The crystalline structure of cellulose was preserved following hydrolysis and ultrasonic processes, with the decline in its polymerization degree, though. Additionally, there was no significant change in the crystallinity. Moreover, thermal degradation showed that the hydrolysis and sonication of cotton would have no effect on the chemical fingerprints of the cellulose. (C) 2014 Elsevier B.V. All rights reserved.
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