生物基单体对聚氨的结构和热特性的影响
Joanna Brzoska1, Janusz Datta2, Rafał Konefał3
1Faculty of Chemistry, Department of Polymer Technology, Gdansk University of Technology, 11/12 Gabriela Narutowicza Street, Gdansk, 80-233, Poland.
Scientific reports
|November 23, 2024
概括
这项研究使用可再生聚醇和生物基聚酸合成了聚氨 (PU). 生物基PU显示出良好的兼容性,但热稳定性和相分离性低于传统石化PU.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 聚氨 (PU) 主要来自石化原料.
- 用可再生资源取代石化产品对于可持续性和市场竞争力至关重要.
- 目前的研究往往侧重于生物基聚,忽视了生物基聚酸.
研究的目的:
- 使用可再生聚醇和生物基聚酸合成聚氨 (PU).
- 研究生物衍生元件对PU结构,热性质和相位行为的影响.
- 评估PU合成中的生物基单体的兼容性和反应性.
主要方法:
- 采用多添加反应,从可再生多和生物基多酸盐中合成PU.
- 福利埃变换红外 (FTIR) 和核磁共振 (NMR) 光谱学用于结构分析.
- 采用小角度X射线散射 (SWAXS),热重力测量分析 (TGA),微分扫描热量测量 (DSC),动态机械热分析 (DMTA) 和TGA-FTIR来研究热性质和相位转换.
主要成果:
- 实现了生物基单体的完全转化,证明了良好的兼容性和反应性.
- 合成的生物基PU与石化基PU相比,其相位分离程度较低.
- 在生物基聚氨中观察到热稳定性略有下降.
结论:
- 可再生聚和生物基聚酸可以成功地用于生产聚氨.
- 生物基PU是一种有希望的可持续替代品,尽管它们的热性能需要进一步优化.
- 该研究强调了具有定制性质的完全生物衍生聚氨的潜力.
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