生物基聚氨 - 尿素具有自愈和闭环可回收性,由可再生二氧化碳和香草素合成
Tianyi Han1, Tongshuai Tian2, Shan Jiang2
1School of Medical Informatics, Chongqing Medical University, Chongqing 400016, China.
Polymers
|August 29, 2024
概括
这项研究引入了新型可回收和自我修复的聚氨酸尿素 (PHUU),这些聚氨酸尿素来自可再生资源,如二氧化碳和香. 这些先进的聚合物为传统聚氨提供了可持续的替代品,证明了出色的再加工性和闭环可回收性.
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
- 绿色化学 绿色化学
背景情况:
- 传统的聚氨 (PU) 依赖于石油,并带来环境挑战.
- 开发可持续的替代品对于绿色化学和可持续发展至关重要.
- 非异酸聚氨 (NIPU) 为减少环境影响提供了一个有希望的途径.
研究的目的:
- 从可再生资源中合成新的交联聚氨酸尿素 (PHUU).
- 调查这些PHUU的自我愈合,再加工和回收能力.
- 建立PHUU作为对基于石油的PU的可持续替代品.
主要方法:
- 使用可再生的二氧化碳 (CO2) 和香草素作为主要原料.
- 在交联的聚合物网络中引入可逆的和胺键.
- 其特点是热稳定性,耐溶剂性,自我愈合性和可回收性质.
主要成果:
- 合成的PHUU表现出极好的热稳定性和耐溶剂性.
- 在60°C时实现了高温压重塑效率 (近98.0%) 和自愈效率 (>95.0%) 的拉伸强度.
- 通过降解和再生,在没有财产损失的情况下,证明了闭环可回收性.
结论:
- 从可再生资源开发创新的交叉链接的PHUU.
- PHUU具有出色的自我修复性,再处理性和闭环可回收性.
- 这项工作提供了一种可持续的战略,用于用环保替代品取代传统的PU.
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