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Cellulose nanocrystals (CNCs) is one of the interesting materials attracting many researchers from the decades, especially when they are extracted from natural biomass resources. The  aim  of  this  study  was  to  explore  the  utilization  of  rice husk  residues  as  source  for  the  production  of CNCs. Cellulose was extracted from rice husk based on chemical method, using the formic/ peroxyformic acid process in order to effectively remove lignin and hemicelluloses from raw material. The cellulose was then treated by acid hydrolysis process performing at 45oC for 30 min, using 15 mL of H2SO4 (64% wt) for each gram of cellulose. The  material  obtained  after  each  stage  of the  treatments  was  carefully  characterized  by Fourier  transform  infrared spectroscopy (FTIR), X-ray  diffraction  (XRD) and Transmission electron microscopy (TEM). Morphological characterization from TEM revealed the appearance of needle-like shaped CNCs, average diameter and length  of 15 nm and  480  nm,  respectively. FT-IR results indicated that lignin was completely removed from the samples during chemical treatment. The  thermal  stability  of  the  materials in successive  treatments was  also investigated  using  thermogravimetric  analysis  (TGA). These  promising  results  proved  revalue  of  this  by-product  for  the production  of  CNCs  and  its  potential  use  as  reinforcement  in  the  preparation  of  nanocomposites.

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Issue: Vol 4 No 2 (2020): Under Publishing
Page No.: Online First
Published: May 9, 2020
Section: Original Research

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Creative Commons License

Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Vu, A., Nguyen, N., Tran, V., Ha Thuc, N., & Le, H. (2020). Isolation of cellulose nanocrystals from rice husk using the formic/ peroxyformic acid process. Science and Technology Development Journal - Natural Sciences, 4(2), Online First.

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