期刊
JOURNAL OF POLYMERS AND THE ENVIRONMENT
卷 25, 期 3, 页码 599-605出版社
SPRINGER
DOI: 10.1007/s10924-016-0844-x
关键词
Lignin; Lignin amine; Fenton oxidation; Reductive amination; Soy protein adhesive
资金
- Agriculture and Food Research Initiative of the USDA [2011-68005-30416]
- National Institute of Food and Agriculture
- Sungrant/United States Department of Transportation [T0013G-A-9]
- NIFA [579545, 2011-68005-30416] Funding Source: Federal RePORTER
In this work, a novel two-step process to prepare primary lignin amine was developed. The lignin used in this study was obtained from the residue of cellulosic sugar fermentation for bioethanol (referred as lignin). The lignin was initially oxidized through Fenton oxidation. The oxidized lignin was further converted to lignin amine by reductive amination. Ammonia was used in the second step leading to give the highly active primary lignin amine. The oxidation and reduction exhibited relatively high yields of 80.0 and 91.2 % respectively. For comparison, lignin was partially depolymerized via mild hydrogenolysis and then the partial depolymerized lignin was also converted to lignin amine using the same method. The obtained lignin amines were characterized in detail using elemental analysis, proton nuclear magnetic resonance (H-1 NMR), and Fourier transform infrared spectroscopy (FTIR). Further, modification of soy protein adhesive by lignin amine was exemplified in wood bonding, and the results indicated that addition of lignin amine greatly increased water resistance of soy protein adhesives.
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