Optimization of homogenization-sonication technique for the production of cellulose nanocrystals from cotton linter.

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  • Author(s): Hemmati F;Hemmati F; Jafari SM; Jafari SM; Taheri RA; Taheri RA
  • Source:
    International journal of biological macromolecules [Int J Biol Macromol] 2019 Sep 15; Vol. 137, pp. 374-381. Date of Electronic Publication: 2019 Jul 01.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7909578 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0003 (Electronic) Linking ISSN: 01418130 NLM ISO Abbreviation: Int J Biol Macromol Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : Elsevier
      Original Publication: Guildford, Eng., IPC Science and Technology Press.
    • Subject Terms:
      Cotton Fiber* ; Sonication*; Cellulose/*chemistry ; Nanoparticles/*chemistry ; Nanotechnology/*methods; Particle Size ; Temperature ; Water/chemistry
    • Abstract:
      Recently, cellulose nanocrystals (CNCs) have attracted a significant interest in different fields including drug delivery, biomedical, and food applications. In this study, homogenization-ultrasonication as a non-hazardous, time-saving, and organic solvent free technique was applied for fabrication of CNCs from cotton linter, containing over 90% cellulose. First, acid hydrolysis was applied on raw cellulose using sulfuric acid at 55, 60 and 65% for 3, 5 and 7 min and at various homogenization speeds. Final CNCs were produced by ultrasonication (350 W) for 3 min. The physicochemical properties of CNCs, particle size, X-ray diffraction (XRD) pattern, Fourier Transform Infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), atomic force microscopy (AFM) and transmission electron microscopy (TEM) were studied. Production yield of CNCs was 59-72%, and their water holding capacity was two times higher than raw cellulose. The average length of CNCs was 133 nm with a width of 10 nm and the XRD pattern revealed a 82% crystallinity degree. The FTIR spectrum detected almost similar frequencies in the raw and crystalline cellulose, while intensity of CNC peaks was reduced. TEM results showed rod-like CNCs with a length of 229 nm. TGA results also showed that thermal stability of CNCs was reduced compared to raw cellulose.
      (Copyright © 2019 Elsevier B.V. All rights reserved.)
    • Contributed Indexing:
      Keywords: CNCs; Cotton linter; Optimization
    • Accession Number:
      059QF0KO0R (Water)
      9004-34-6 (Cellulose)
    • Publication Date:
      Date Created: 20190705 Date Completed: 20200115 Latest Revision: 20200115
    • Publication Date:
      20231215
    • Accession Number:
      10.1016/j.ijbiomac.2019.06.241
    • Accession Number:
      31271799