Structure of Nascent Microbial Cellulose II. Effects of Methyl and Methoxy Groups of Direct Blue 14 and 15 on Nascent Microbial Cellulose

Abstract

The influence of Direct Blue 14 and Direct Blue 15 having the same skeletal backbone structure except difference of methyl and methoxy groups, numbers and positions of other substituent groups on the structure of nascent microbial cellulose was examined. The products from Acetobacter-culture in the presence of Direct Blue 14 or Direct Blue 15, and celluloses regenerated from these products are almost the same in respect of structure and nature characterized by X-ray, solid state 13C NMR and deuteration-IR measurements. Each of the products is a crystalline dye-cellulose complex and regenerated cellulose is cellulose II. From these results, it is clear that the effect of methyl groups in Direct Blue 14 on the nascent microbial cellulose is almost the same as that of methoxy groups in Direct Blue 15.

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Mondal, M., Kai, A. Structure of Nascent Microbial Cellulose II. Effects of Methyl and Methoxy Groups of Direct Blue 14 and 15 on Nascent Microbial Cellulose. Polym J 30, 84–89 (1998). https://doi.org/10.1295/polymj.30.84

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Keywords

  • Acetobacter xylinum
  • Microbial Cellulose
  • Dye-Cellulose Complex
  • Cellulose Sheet
  • Direct Blue 14
  • Direct Blue 15
  • Regenerated Cellulose

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