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在聚氨制造中作为聚醇的分离性红素

Changgeng Li¹, Huiqi Jin¹, Minjie Hou¹

¹Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China; Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.

International journal of biological macromolecules

|November 22, 2023

概括

这项研究探讨了在聚氨泡 (PUF) 中使用生物质成分素作为聚醇. 较低分子量宁增强了机械性能和孔隙结构,而较高分子量宁提高了密度和热稳定性.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
生物质的价值化生物质的价值化

背景情况:

灵是一种复杂的生物聚合物,由于异质性,在应用中存在挑战.
从可再生资源 (如素) 开发可持续的多聚醇对于环保材料至关重要.
聚氨泡 (PUF) 是具有广泛工业应用的多功能材料.

研究的目的:

为了研究红素分子量分数对聚氨泡特性的影响.
用绿色溶剂在PUF生产中评估素作为聚醇成分.
为了将木质素结构与泡性能指标 (如机械强度和热稳定性) 相对应.

主要方法:

使用绿色溶剂将素分成不同的分子量.
在聚氨泡合成中将素分数作为聚醇的结合.
泡形态 (孔隙结构),机械性能 (抗拉强度,破裂时的延长),密度和热稳定性的表征.

主要成果:

较低分子量宁导致均的孔隙结构和增强的机械强度.
较高的分子量素提高了泡密度和热稳定性,但损害了机械性能和孔隙均性.
在2%-30%的替代率下,分子量最低的素实现了99.13%的反应参与率,使破裂时的延长率提高到834%,拉伸强度达到0.90 MPa.
增加的红素替代增强了热稳定性和未反应的红素的数量.

结论:

的分子量显著影响了聚氨泡的特性.
量身定制的素分数允许针对特定应用的PUF特性进行有针对性的优化.
可持续的聚氨泡可以使用分成的木质素生产,为生物质废弃物的利用提供了一条途径.

关键词:

的氧化酸.分子重量分子重量聚氨泡是一种聚氨泡.

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