| 光谱学与光谱分析 |
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| Spectra and Structural Analysis of High Boiling Solvent Lignin from Bagasse |
| CHEN Yun-ping1, 3, CHEN Rui-qiang2, CHENG Xian-su1, 3*, YANG Xiang-xi1, WU Geng-yun1, CHEN Yao-ting1 |
1. College of Material Science and Engineering, Fuzhou University, Fuzhou 350002, China
2. Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China
3. Department of Chemistry, Minjiang University, Fuzhou 350011, China |
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Abstract Bagasse high boiling solvent lignin is a polymer prepared by high boiling solvent pulping process. In the IR spectra, the absorbance of HBS lignin at 1 700 and 1 328 cm-1 is present. It is showed that the nonconjugated carbonyl existed. The strong absorbance of UV spectra of HBS lignin is about 201 nm for n→π* electron transition, which indicates that the HBS lignin is an unsaturated polymer. Judged from the 1H NMR, the syringyl and guaiacyl group in the lignin is present. The element composition and the content of OCH3 group were investigated. The empirical C9-formula of the lignin is C9H9.79O2.58(OCH3)0.75 according to dealing with the experiment data. The weight-average molecular weight of the HBS lignin is 2 674 g·mol-1.
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Received: 2005-08-15
Accepted: 2005-11-12
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Corresponding Authors:
CHENG Xian-su
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| Cite this article: |
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CHEN Yun-ping,CHEN Rui-qiang,CHENG Xian-su, et al. Spectra and Structural Analysis of High Boiling Solvent Lignin from Bagasse[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(10): 1880-1883.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I10/1880 |
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