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Production of polyurethane elastomer from highly reactive acetic acid lignin-derived polyols with reduced molecular weights
Biofuels, Bioproducts and Biorefining ( IF 3.9 ) Pub Date : 2021-05-05 , DOI: 10.1002/bbb.2226
Tian He 1 , Wenxiang Zhu 1 , Mingyou Liu 1 , Xiaofei Tian 2, 3 , Fangeng Chen 1
Affiliation  

Highly reactive polyols were prepared from modified acetic acid lignin (AAL) by a two-step combination of mild hydrothermal degradation and hydroxylation. The AAL-based polyols became relatively reactive and compatible with diisocyanate, with a reduction in the number average molecular weight (Mn) from 2923 to 684 g/mol and an increase in the hydroxyl content from 5.21 to 9.13 mmol/g. The mechanical performance and thermal properties of the AAL-based polyurethane elastomers (LPUEs) strongly depended on the molecular weight and hydroxyl content of the AAL-based polyols in the partial substitution of polytetramethylethylene ether glycol (PTMEG). This study proposed the prospective utilization of AAL as an alternative resource in the synthesis of polymers and biomaterials. © 2021 Society of Industrial Chemistry and John Wiley & Sons Ltd.

中文翻译:

由高活性乙酸木质素衍生的低分子量多元醇生产聚氨酯弹性体

通过温和水热降解和羟基化的两步组合,由改性乙酸木质素 (AAL) 制备高活性多元醇。基于 AAL 的多元醇变得相对活泼并与二异氰酸酯相容,同时数均分子量 (M n) 从 2923 到 684 g/mol,羟基含量从 5.21 增加到 9.13 mmol/g。AAL 基聚氨酯弹性体 (LPUE) 的机械性能和热性能很大程度上取决于 AAL 基多元醇在部分取代聚四甲基乙醚二醇 (PTMEG) 中的分子量和羟基含量。该研究提出了将 AAL 作为替代资源用于合成聚合物和生物材料的前景。© 2021 工业化学学会和 John Wiley & Sons Ltd.
更新日期:2021-07-01
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