Terahertz time-domain spectroscopy as a novel tool for crystallographic analysis in cellulose: the potentiality of being a new standard for evaluating crystallinity
Terahertz time-domain spectroscopy as a novel tool for crystallographic analysis in cellulose: the potentiality of being a new standard for evaluating crystallinity
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太赫兹时域光谱作为纤维素晶体分析的新工具:成为评估结晶度新标准的潜力
DOI:
10.1007/s10570-021-03902-x
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发表时间:
2021
期刊:
影响因子:
5.7
通讯作者:
T. Inagaki
中科院分区:
文献类型:
--
作者:
H. Wang;S. Tsuchikawa;T. Inagaki
Given that terahertz (THz) radiation responds to intermolecular forces such as hydrogen bonds, THz time-domain spectroscopy (THz-TDS) has expanded possibilities in cellulose research. In this study, THz-TDS was used to investigate the crystallinity of three types of cellulose-based materials. Microcrystalline cellulose (MCC) and wood were ball milled at different times, and pseudo-wood was a mixture of MCC and lignin of different mass fractions. All the samples showed peaks at 3.04 THz in the THz mass absorption coefficient spectra. Further, the spectra from 2.79 THz to 3.32 THz were cut out and detrended by subtraction from a baseline. The integrated intensity of the detrended spectra showed a correlation with the mass fraction of lignin of the pseudo-wood samples, and ball milling time of the MCC and wood samples. The correlation was similar with the crystallinity index calculated from X-ray powder diffraction. Moreover, the original wood sample without ball milling had an integrated intensity that was about 30% that of the original MCC sample, matching with the cellulose concentration of the wood (about 30% to 40%). We normalized the integrated intensity of 2.79 THz to 3.32 THz into 1 to 0 by a min–max algorithm and proposed a new “index” for evaluating crystallinity.
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DOI:
10.1515/hf-2013-0013
发表时间:
2013
期刊:
--
影响因子:
--
作者:
T. Inagaki;I. Hartley;S. Tsuchikawa;M. Reid
通讯作者:
M. Reid
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:
2.5
作者:
P. H. Hermans
通讯作者:
P. H. Hermans
影响因子:
15
作者:
Nishiyama, Y;Langan, P;Chanzy, H
通讯作者:
Chanzy, H
DOI:
--
发表时间:
1950
期刊:
影响因子:
--
作者:
L. Jörgensen;R. Kießling;G. Lindstedt;P. Kinell
通讯作者:
P. Kinell