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Vol. 35 No. 1 (2023): Vol 35 Issue 1

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Synthesis and Morphological Studies of Nanocellulose Fibers from Lignocellulosic Biomass in Ionic Liquid

https://doi.org/10.14233/ajchem.2023.23999
J.K. Prasannakumar
Research Centre, Department of Chemistry, Bapuji Institute of Engineering and Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Davangere-577004, India
G.K. Prakash
Department of Chemistry, Sri Taralubalu PU College, Davangere-577004, India
B. Suresh
Department of Civil Engineering, Bapuji Institute of Engineering and Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Davangere-577006, India
B.E. Basavarajappa
Research Centre, Department of Chemistry, Bapuji Institute of Engineering and Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Davangere-577004, India
H.S. Onkarappa
Department of Chemistry, G.M. Institute of Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Davanagere-577006, India
Bharath K. Devendra
Department of Chemistry, M.S. Ramaiah College of Arts, Science and Commerce, MSR Nagar, MSRIT Post, Bengaluru-560054, India
S.G. Prasannakumar
Department of Chemistry, M.S. Ramaiah College of Arts, Science and Commerce, MSR Nagar, MSRIT Post, Bengaluru-560054, India

Corresponding Author(s) : J.K. Prasannakumar

prassvin@gmail.com

Asian Journal of Chemistry, Vol. 35 No. 1 (2023): Vol 35 Issue 1

Abstract

Lignocellulosic agricultural biomasses and wood are the two most important natural sources of cellulose available on the planet. When chemically treated, cellulose is the world’s most common and widely used biopolymer, with properties such as low price, good toughness, good biocompatibility and good thermal stability. In this study, nanocellulose was extracted from ragi stalk, mango wood and groundnut husk. The cellulose was alkali-treated with NaOH and bleached with sodium chlorite to remove lignin and hemicellulose. Ionic liquid (1-butyl-3-methylimidazolium chloride ([Bmim]Cl) solvent was used to treat the obtained cellulose. FTIR spectra highlight the functional groups and substantial conversion of cellulose to nanocellulose. The crystalline or semi-crystalline nature of synthesized nanocellulose was illustrated by XRD. The TEM images record the size of synthesized nanocellulose between 11.12 and 31.16 nm. The reduction in size is mainly due to ultrasonication and centrifugation. The thermal stability of the obtained nanocellulose was evidenced using TGA/DTA. The thermal studies insight that the synthesized nanocellulose samples possess superior degradation temperature up to 473.8 ºC.

Keywords

Ragi stalk Mango wood Groundnut husk Ionic liquid Nanocellulose
Prasannakumar, J., Prakash, G., Suresh, B., Basavarajappa, B., Onkarappa, H., K. Devendra, B., & Prasannakumar, S. (2022). Synthesis and Morphological Studies of Nanocellulose Fibers from Lignocellulosic Biomass in Ionic Liquid. Asian Journal of Chemistry, 35(1), 83–88. https://doi.org/10.14233/ajchem.2023.23999
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