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Studies on the thermal properties and structures of deoxyhalocelluloses

Abstract

The thermal properties and structures of deoxyhalocelluloses were studied using thermogravimetric and differential scanning calorimetric analyses and an X-ray diffraction method. The X-ray diffraction curves of the cellulose derivatives were obtained after subjecting them to a specific treatment that was supposed to render a specific cellulose allomorph from the amorphous state cellulose; all of the cellulose derivatives examined without such treatment exhibited no crystalline features. Only deoxyfluorocellulose was found to give a diffraction pattern similar to that of the corresponding cellulose allomorph, which was cellulose IV in this case. On the basis of the thermal analyses, it was confirmed that chlorodeoxycellulose has a flameretardant property, whereas deoxyfluorocellulose was found not to be flame-retardant. The difference is supposedly due to the difference in the bonding energy between C-Cl and C-F.

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Correspondence to Natsuki Kasuya.

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Kasuya, N., Suzuki, T. & Sawatari, A. Studies on the thermal properties and structures of deoxyhalocelluloses. J Wood Sci 45, 161–163 (1999). https://doi.org/10.1007/BF01192334

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Key words

  • Deoxyhalocellulose
  • Chlorodeoxycellulose
  • Deoxyfluorocellulose
  • Thermal
  • Structure