Terahertz time-domain spectroscopy as a novel tool for crystallographic analysis in cellulose: cellulose I to cellulose II, tracing the structural changes under chemical treatment
Terahertz time-domain spectroscopy as a novel tool for crystallographic analysis in cellulose: cellulose I to cellulose II, tracing the structural changes under chemical treatment
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太赫兹时域光谱作为纤维素晶体分析的新工具:从纤维素 I 到纤维素 II,追踪化学处理下的结构变化
DOI:
10.1007/s10570-022-04493-x
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发表时间:
2022
期刊:
影响因子:
5.7
通讯作者:
Tetsuya Inagaki
中科院分区:
文献类型:
--
作者:
Han Wang;Hiroki Kataoka;Satoru Tsuchikawa;Tetsuya Inagaki
Terahertz time-domain spectroscopy (THz-TDS) has expanded possibilities in cellulose crystallography research, as THz radiation detects most intermolecular vibrations and responds to the phonons of crystalline lattices. In this study, we traced the transformation of the cellulose crystalline lattice from cellulose I to cellulose II by THz-TDS and X-ray powder diffraction. Cellulose II was obtained by treating cellulose I with NaOH of different concentrations (0 wt%–20 wt%, at 2 wt% intervals). The THz absorption coefficient spectra of cellulose II showed three characteristic peaks (at 1.32 THz, 1.76 THz, and 2.77 THz). The THz absorption coefficient spectra of cellulose II treated with 20-wt% NaOH and cellulose I without NaOH treatment were fitted by a seventh-order Fourier series. Thus, the THz absorption coefficient spectra of samples treated with NaOH of other concentrations could be considered a combination of these two fitted profiles of cellulose I and cellulose II, multiplied by different coefficients. Furthermore, the coefficients could reflect the relative contents of cellulose I and cellulose II in the samples.
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DOI:
--
发表时间:
2020
期刊:
Definitions
影响因子:
--
作者:
A. Kakigi;H. Hirakawa;N. Harel;R. J. Mount;R. Harrison
通讯作者:
R. Harrison
DOI:
10.1109/icimw.2009.5325682
发表时间:
2009
期刊:
2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves
影响因子:
--
作者:
Cunlin Zhang;Kai
通讯作者:
Kai
影响因子:
15
作者:
Nishiyama, Y;Langan, P;Chanzy, H
通讯作者:
Chanzy, H
影响因子:
56.9
作者:
Fellers, RS;Leforestier, C;Saykally, RJ
通讯作者:
Saykally, RJ
影响因子:
5.7
作者:
H. Wang;S. Tsuchikawa;T. Inagaki
通讯作者:
T. Inagaki