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Oxidative delignification of wood in the supercritical carbon dioxide medium. 4. Acetylization of cellulose in the supercritical carbon dioxide medium

Abstract

It is shown that cellulose can be acetylated with acetic anhydride in supercritical carbon dioxide in the absence of traditional catalysts, toxic solvents, and dilutants. As substrates, three cellulose samples were tested: sulfite and sulfate cellulose and cellulose obtained by low-temperature delignification in a supercritical carbon dioxide medium. The chemical composition of the cellulose diacetate product is characterized.

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Correspondence to A. D. Ivakhnov.

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Original Russian Text © A.D. Ivakhnov, T.E. Skrebets, K.G. Bogolitsyn, 2011, published in Sverkhkriticheskie Flyuidy: Teoriya i Praktika, 2011, Vol. 6, No. 4, pp. 8–12.

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Ivakhnov, A.D., Skrebets, T.E. & Bogolitsyn, K.G. Oxidative delignification of wood in the supercritical carbon dioxide medium. 4. Acetylization of cellulose in the supercritical carbon dioxide medium. Russ. J. Phys. Chem. B 5, 1250–1252 (2011). https://doi.org/10.1134/S1990793111080070

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  • DOI: https://doi.org/10.1134/S1990793111080070

Keywords

  • acetylation
  • supercritical fluids
  • cellulose
  • acetic anhydride
  • cellulose diacetate