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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.

References

  1. 1.

    Kasuya N, Iiyama K, Ishizu A (1992) Synthesis and characterization of highly substituted deoxyfluorocellulose acetate. Carbohydr Res 229:131–139

  2. 2.

    Kasuya N, Iiyama K, Meshitsuka G, Ishizu A (1994) Preparation of 6-deoxy-6-fluorocellulose. Carbohydr Res 260:251–257

  3. 3.

    Kasuya N, Iiyama K, Meshitsuka G, Okano T (1997) A structural study on fluorinated cellulose: crystallization of fluorinated cellulose by thermal or conversion treatment used for cellulose. Carbohydr Polym 34:229–234

  4. 4.

    Furuhata K, Chang H-S, Aoki N, Sakamoto M (1992) Chlorination of cellulose withN-chlorosuccinimide-triphenylphosphine under homogeneous conditions in lithium chloride-N,Ndimethylacetamide. Carbohydr Res 230:151–164

  5. 5.

    Japanese Industrial Standard (JIS) (1991) K 0101, 117–118

  6. 6.

    Hashitani H, Yoshida H, Muto H (1967) Simple direct photometric determination of traces of fluoride with alizarin complexon. Bunsekikagaku 16:44–46

  7. 7.

    Isogai A, Usuda M (1991) Preparation of low-molecular weight cellulose using phosphoric acid. Mokuzai Gakkaishi 37:339–344

  8. 8.

    Yatsu Y, Calamari TA Jr, Benerito RR (1986) Conversion of cellulose I to stable cellulose III. Textile Res J 56:419–424

  9. 9.

    Isogai A, Akishima Y, Onabe F, Usuda M (1991) Structural changes of amorphous cellulose by thermal and hydrothermal treatments. Seni Gakkaishi 47:T573-T579

  10. 10.

    Shafizadeh F, Lai YZ, Nelson CR (1976) Thermal degradation of 6-chloro carbohydrates. J Appl Polym Sci 20:139–152

  11. 11.

    Ishii T, Ishizu A, Nakano J (1978) Thermal reaction of chlorodeoxycellulose. Seni Gakkaishi 34:T505-T509

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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