Ultrasonic-mediated production of carboxylated cellulose nanospheres


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Output type: Journal article

UM6P affiliated Publication?: Yes

Author list: Ayouch I., Barrak I., Kassem I., Kassab Z., Draoui K., El Achaby M.

Publisher: Elsevier

Publication year: 2021

Journal: Journal of Environmental Chemical Engineering (2213-3437)

Journal acronym: J ENVIRON CHEM ENG

Volume number: 9

Issue number: 5

ISSN: 2213-3437

eISSN: 2213-3437

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114338064&doi=10.1016%2fj.jece.2021.106302&partnerID=40&md5=96f04ba39bb40520a9d1f8671cb5db9d

Languages: English (EN-GB)


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Abstract

In this study, carboxy-functionalized spherical cellulose nanoparticles have been produced from Alfa plant-derived cellulose microfibers (CMF) using ultrasonic-induced cellulose fragmentation process. CMF, with fiber diameter of 7.26 µm and crystallinity of 87%, were firstly produced from Alfa plant fibers and then subjected to surface carboxylation using TEMPO-mediated oxidation process. The as-resulted TEMPO-oxidized CMF (T-CMF), with an average diameter of 2.72 µm, a crystallinity of 89% and carboxyl groups content of 1032 mmol COO-/Kg cellulose, were then exposed to ultrasonication treatment for 45 min, resulting in the formation of cellulose nanospheres (CNS) with an average diameter of 33.96 ± 7.01 nm and a crystallinity of 76%. The carboxyl groups content on the surface of CNS was measured at 945 mmol COO-/Kg cellulose. This study demonstrated the importance of the ultrasonication process as a green method for producing CNS with interesting properties, which can be used in various potential functional applications. © 2021 Elsevier Ltd


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Last updated on 2021-05-12 at 23:16