Novel tool for characterization of noncrystalline regions in cellulose: A FTIR deuteration monitoring and generalized two-dimensional correlation spectroscopy

Yukako Hishikawa, Shun Ichi Inoue, Jun Magoshi, Tetsuo Kondo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Our previous results indicated that noncrystalline regions in a regenerated cellulose film comprised at least three domains engaged in different manners of molecular assembly [Kondo et al. In Cellulose Derivatives; Heinze, T. J., Glasser, W. G., Eds.; ACS Symposium Series 688; American Chemical Society: Washington, DC, 1998; Chapter 12]. In this article, we attempt to characterize each of the three noncrystalline domains in the film. The method used was a FTIR monitoring of deuteration from hydroxyl (OH) groups to OD, leading to the two-dimensional (2D) correlation analysis. The time-scan spectra in the OH-OD exchanging reaction were transformed into two kinds of 2D correlation spectra, the synchronous and the asynchronous spectra. Of the two, some cross-peaks were found in the latter spectrum. This suggests that the asynchronous 2D correlation spectrum could differentiate the contribution of OH groups due to different frequencies of hydrogen bonds in each domain. Here we will show the validity of this 2D correlation method as a powerful tool to predict hydrogen-bonding networks of the noncrystalline domains in cellulose.

Original languageEnglish
Pages (from-to)2468-2473
Number of pages6
JournalBiomacromolecules
Volume6
Issue number5
DOIs
Publication statusPublished - Sep 1 2005

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry

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