Download | - View accepted manuscript: Preparation of lignopolyols from wheat straw soda lignin (PDF, 2.8 MiB)
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DOI | Resolve DOI: https://doi.org/10.1021/jf202452m |
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Author | Search for: Ahvazi, Behzad1; Search for: Wojciechowicz, Olivia1; Search for: Ton-That, Tan-Minh2; Search for: Hawari, Jalal1 |
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Affiliation | - National Research Council of Canada. NRC Biotechnology Research Institute
- National Research Council of Canada. NRC Industrial Materials Institute
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Format | Text, Article |
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Subject | wheat straw; soda lignin; oxyalkylation; propylene oxide; lignopolyl; characterization; 31P NMR spectroscopy; FTIR |
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Abstract | Wheat 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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Publication date | 2011-08-19 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NRC number | NRCC 53382 |
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NPARC number | 18806226 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | c37fddd0-1ffe-4d62-a2b5-403f476507f4 |
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Record created | 2012-03-06 |
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Record modified | 2020-04-21 |
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