Study on Temperature-Dependent Changes in Hydrogen Bonds in Cellulose Iβ by Infrared Spectroscopy with Perturbation-Correlation Moving-Window Two-Dimensional Correlation Spectroscopy

摘要: Infrared (IR) spectra were measured for cellulose Ibeta prepared from the mantle of Halocynthia roretzi over a temperature range 30-260 degrees C to explore temperature-dependent changes in hydrogen bonds (H-bonds) crystal. Structural at phase transition 220 are elucidated functional group level by perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy. The PCMW2D show that intensities bands arising O3-H3...O5 and O2-H2...O6 intrachain H-bonds dramatically decrease C, whereas intensity due interchain not observed adequately. These results suggest is induced dissociation H-bonds. However, so much responsible directly.