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Bacterial Nanocellulose Nitrates.

Vera V Budaeva1, Yulia A Gismatulina1, Galina F Mironova1

  • 1Laboratory of Bioconversion, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Altai Krai, Russia.

Nanomaterials (Basel, Switzerland)
|December 1, 2019
PubMed
Summary

Researchers scaled up bacterial nanocellulose (BNC) production and synthesized cellulose nitrate (CN). The resulting CN retained BNC

Keywords:
Medusomyces giseviibacterial nanocellulosecarbon nanomaterialscellulose nitratesnitrationnitric-sulfuric acidsscale-upsurface morphology

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Area of Science:

  • Polymer Science
  • Materials Science
  • Green Chemistry

Background:

  • Bacterial nanocellulose (BNC) possesses unique properties like nanostructure and high crystallinity.
  • Surface functionalization of BNC is a key research area in polymer science.
  • BNC biosynthesis aligns with green chemistry principles.

Purpose of the Study:

  • To scale up the production of bacterial nanocellulose (BNC).
  • To synthesize cellulose nitrate (CN) from the scaled-up BNC.
  • To characterize the synthesized CN and its structural properties.

Main Methods:

  • Cyclic biosynthesis of BNC using *Medusomyces gisevii* Sa-12 in glucose medium (10-72 L).
  • Nitration of freeze-dried BNC using a mixed sulfuric-nitric acid.
  • Characterization of BNC and CN using SEM, IR, TGA/DTA, and 13C NMR spectroscopy.

Main Results:

  • Successfully scaled BNC biosynthesis to produce 9432 g of gel-films.
  • Synthesized CN with 10.96% nitrogen content and 916 cP viscosity.
  • SEM analysis confirmed CN retained the 3D reticulate structure of BNC fibers.

Conclusions:

  • Scaled production of BNC and its conversion to CN were achieved.
  • The synthesized CN maintains the characteristic nanostructure of BNC.
  • The resulting CN forms a high-viscosity organogel, indicating potential for new applications.