Study of Organosolv Lignins by Methods of FTIR and NMR Spectroscopy

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY
A. Levdansky, A. Kondrasenko, Y. Malyar, V. Levdansky, B. Kuznetsov
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引用次数: 3

Abstract

The analysis of the literature on the spectral methods of lignins study was carried out. The most suitable spectral methods for elucidating the structural features of soluble organosolv lignins were selected. The possibilities of FTIR, 1Н NMR, 13С NMR and 2D HSQC NMR methods were demonstrated on the example of studying the structure of ethanollignins obtained from fir and aspen wood. It was established that fir and aspen lignins are G type and GS type lignins, respectively. The HSQC spectra analysis demonstrated a presence of β–O–4′, β–β′, β–5′ linkages in the ethanollignins. It was found that β–O–4′ linkages in ethanollignins from fir and aspen were partially acylated with ethoxy groups in the α-position
有机溶剂型木质素的FTIR和NMR研究
对木质素光谱法研究的文献进行了分析。对水溶性有机溶质木质素的结构特征进行了光谱分析。以杉木和杨木乙醇木质素为研究对象,验证了FTIR、1Н NMR、13С NMR和二维HSQC NMR方法的可行性。结果表明,杉木和杨木的木质素分别为G型和GS型。HSQC光谱分析表明乙醇脂素中存在β - o - 4′、β -β′、β - 5′键。研究发现,杉木和杨木乙醇木质素中的β-O-4′键被α-位置的乙氧基部分酰化
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来源期刊
CiteScore
1.10
自引率
0.00%
发文量
13
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