Preparation of lignopolyols from wheat straw soda lignin

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Journal titleJournal of Agricultural and Food Chemistry
Pages1050510516; # of pages: 12
Subjectwheat straw; soda lignin; oxyalkylation; propylene oxide; lignopolyl; characterization; 31P NMR spectroscopy; FTIR
AbstractWheat straw soda lignin was modified and characterized by several qualitative and quantitative methods such as <sup>31</sup>P NMR spectroscopy, to evaluate its potential as a substitute for polyols in view of polyurethane applications. Chemical modification of the lignin was achieved with propylene oxide to form ligno-polyol derivatives. This was performed by a two-step reaction of lignin with maleic anhydride followed by propylene oxide and by direct oxyalkylation under acidic and alkaline conditions. The physical and chemical properties of ligno-polyols from each method and the subsequent chain-extended hydroxyl groups were evaluated. Direct oxyalkylation of lignin under alkaline conditions was found to be more efficient than acidic conditions and more effective than the two-step process for preparing ligno-polyol with higher aliphatic hydroxyl contents.
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PublisherAmerican Chemical Society
AffiliationNRC Biotechnology Research Institute; NRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number53382
NPARC number18806226
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Record identifierc37fddd0-1ffe-4d62-a2b5-403f476507f4
Record created2012-03-06
Record modified2017-03-23
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