The surface structure of well-ordered native cellulose fibrils in contact with water

Erik Malm, Vincent Bulone, Kristina Wickholm, Per Tomas Larsson, Tommy Iversen

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

CP/MAS 13C NMR spectroscopy was used in combination with spectral fitting to examine the surface structure of hydrated cellulose I fibrils from Halocynthia and Gluconoacetobacter xylinus. To increase the spectral intensities and minimize signal overlap, G. xylinus celluloses site-specifically enriched in 13C either on C4 or on both C1 and C6 were examined. The experimental data showed multiple C4 and C6 signals for the water accessible fibril surfaces in the highly crystalline celluloses. These signal multiplicities were attributed to structural features in the surface layers induced by the fibril interior, and could not be extracted by spectral fitting in celluloses with a lower degree of crystallinity such as cellulose from cotton.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalCarbohydrate Research
Volume345
Issue number1
DOIs
Publication statusPublished - 11 Jan 2010
Externally publishedYes

Keywords

  • Cellulose
  • CP/MAS C NMR
  • Gluconoacetobacter xylinus
  • Halocynthia
  • Spectral fitting

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