生物基复合聚氨泡的高效回收途径通过可持续的二胺
Federica Recupido1, Giuseppe Cesare Lama1, Sebastian Steffen2
1Institute of Polymers, Composites and Biomaterials, Italian National Research Council, P.le. E. Fermi 1, 80055 Portici, Naples, Italy.
Ecotoxicology and environmental safety
|December 21, 2023
概括
生物基聚氨泡通过使用生物衍生butan-1,4-胺 (BDA) 得到有效的脱聚合,其性能优于化石衍生乙-1,2-胺 (EDA). 这一过程使得第二代泡能够产生出色的性能,支持循环经济.
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:
- 氨解是去聚合聚合物的关键方法,如聚氨.
- 开发用于聚氨泡生产和回收的可持续替代品至关重要.
- 生物基化学品提供了一条通往更绿色材料的有希望的途径.
研究的目的:
- 通过使用生物衍生butan-1,4-胺 (BDA) 来研究生物基聚氨泡的氨解.
- 为了比较BDA与化石衍生乙-1,2-二胺 (EDA) 在聚氨脱聚合中的有效性.
- 从去聚合材料制备和描述第二代生物基复合聚氨泡.
主要方法:
- 生物基聚氨泡的脱聚合利用BDA和EDA在不同的氨基/聚氨比率 (1:1和1:0.6) 中进行脱聚合.
- 通过富里埃变换红外 (FTIR) 和核磁共振 (NMR) 光谱分析脱聚合系统.
- 制备第二代聚氨泡,将20%的脱聚合物产品纳入其中,并评估其形态,机械和热性能.
主要成果:
- 与EDA相比,生物衍生BDA在脱聚合方面表现出更高的效率,这是由于其优越的基本性和核性.
- 使用BDA.观察到更快的脱聚合率.
- 用BDA型脱聚合系统制备的第二代聚氨泡,其F/A比率为1:0.6,表现出最佳性能 (压力强度:71 ± 9 kPa,导热率:0.042 ± 0.015 W·m−1·K−1).
结论:
- 生物衍生BDA是比EDA更有效的聚氨泡氨解试剂.
- 该研究成功生产了高性能第二代生物基复合聚氨泡.
- 这些发现支持这些材料在包装和建筑等行业的应用,与循环经济原则保持一致.
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