Multiple perturbation two-dimensional correlation analysis of cellulose by attenuated total reflection infrared spectroscopy

Hideyuki Shinzawa, Shin Ich Morita, Kimie Awa, Mariko Okada, Isao Noda, Yukihiro Ozaki, Hidetoshi Sato

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

An extension of the two-dimensional (2D) correlation analysis scheme for multi-dimensional perturbation is described. A simple computational form is provided to construct synchronous correlation and disrelation maps for the analysis of microscopic imaging data based on two independent perturbation variables. Sets of time-dependent attenuated total reflection infrared (ATR-IR) spectra of water and cellulose mixtures were collected during the evaporation of water from finely ground cellulose. The system exhibits complex behaviors in response to two independent perturbations, i.e., evaporation time and grinding time. Multiple perturbation 2D analysis reveals a specific difference in the rate of evaporation of water molecules when accompanied by crystallinity changes of cellulose. It identifies subtle differences in the volatility of water, which is related to the crystalline structure of cellulose.

Original languageEnglish
Pages (from-to)501-506
Number of pages6
JournalApplied spectroscopy
Volume63
Issue number5
DOIs
Publication statusPublished - 2009 May
Externally publishedYes

Keywords

  • 2D-COS
  • Cellulose
  • IR spectroscopy
  • Infrared spectroscopy
  • Perturbation
  • Pharmaceutical tablets
  • Two-dimensional correlation spectroscopy

ASJC Scopus subject areas

  • Instrumentation
  • Spectroscopy

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