Perturbation-correlation moving-window two-dimensional correlation spectroscopy
作者： Shigeaki Morita , Hideyuki Shinzawa , Isao Noda , Yukihiro Ozaki
DOI: 10.1366/000370206776593690
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摘要: A new method of analysis, perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy, is proposed. For a spectral data set collected under an external perturbation, this provides pair synchronous and asynchronous spectra plotted on plane between variable (e.g., wavenumber) axis perturbation temperature) axis. One the advantages analysis that complicated variation along direction can be monitored. It has been found PCMW2D are similar to first derivative negative second original data, respectively. To demonstrate potential it applied temperature-dependent infrared (IR) poly(vinyl alcohol) (PVA) film. The thermal behavior PVA film revealed by analysis. Two characteristic cross-peaks observed in generated from IR crystalline phase C-O stretching band at 1141 cm-1 melting temperature 209 degrees C amorphous 1095 another specific 233 C. This corresponds degradation due elimination hydroxyl group attached main chain.
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