Cited by 22Advanced Cellulose Research StudiesNanocomposite Films for Food PackagingDyeing and Modifying Textile Fibers

TEMPO-oxidized cellulose nanofibril film from nano-structured bacterial cellulose derived from the recently developed thermotolerant Komagataeibacter xylinus C30 and Komagataeibacter oboediens R37–9 strains

Chitbanyong, Korawit, Pisutpiched, Sawitree, Khantayanuwong, Somwang, Theeragool, Gunjana, Puangsin, Buapan·2020·International Journal of Biological Macromolecules

Abstract

Bacterial cellulose (BC), prepared from two recently developed thermotolerant bacterial strains (Komagataeibacter xylinus C30 and Komagataeibacter oboediens R37-9), were used as a raw material to synthesize nanofibril films. Field-emission scanning electron microscope (FE-SEM) observations confirmed the ultrafine nano-structure of BC pellicle (BCP) with average fibril widths between 50 and 60 nm. The BC was directly oxidized in a TEMPO/NaBr/NaClO system at pH of 10 for 2 h. TEMPO-oxidized bacterial cellulose nanofibrils (TOBCN) were obtained by a mild mechanical treatment and the TOBCN films were prepared through heat-drying. The oxidation yielded a recovery ratio between 70 and 80% by weight with an increase in the carboxylate content of 0.9-1.0 mmol g -1. Nanofibrillation yields were more than 90% and the resulting high aspect ratio TOBCNs were ~6 nm in average width with >800 nm in lengths, when observed under transmission electron microscope (TEM). TOBCN film of K. xylinus C30 exhibited high transparency (79%), tensile strength (142 MPa), Young's modulus (7.13 GPa), elongation around failure (3.89%), and work of fracture (2.29 MJ m-3), when compared to the TOBCN films of K. oboediens R37-9 at 23 °C and 50% RH. Coefficients of thermal expansion of both the TOBCN films were low at around 6 ppm K-1.

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Crossref · 10.1016/j.ijbiomac.2020.09.124

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Authors
Chitbanyong, K., Pisutpiched, S., Khantayanuwong, S., Theeragool, G., & Puangsin, B.
Affiliations
Kasetsart University (TH)
Corresponding author
Puangsin, Buapan
Venue
International Journal of Biological Macromolecules
Publisher
Elsevier BV
Published
2020-11
Volume
163
Pages
1908-1914
ISSN
0141-8130 (ISSN-L)
OpenAlex
W3087849950
Cited by
22
References
50
Citations by year
2026: 6 · 2025: 3 · 2024: 1 · 2023: 2 · 2022: 8 · 2021: 2
FWCI
0.78
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Biological Macromolecules (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Research Council of Thailand
  • Biodiversity-Based Economy Development Office
Topics
  • Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
  • Physical Sciences › Materials Science › Biomaterials › Nanocomposite Films for Food Packaging
  • Physical Sciences › Engineering › Building and Construction › Dyeing and Modifying Textile Fibers
Keywords
bacterial cellulose, TEMPO-oxidized cellulose nanofibers, cellulose nanofibril films, Acetobacter xylinum, carboxylated cellulose, nanofibrillation, mechanical properties, thermal expansion, transparency, cellulose recovery
MeSH terms
Cellulose, Cellulose, Oxidized, Cyclic N-Oxides, Oxidation-Reduction, Tensile Strength, Acetobacteraceae, Nanostructures, Nanofibers

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