利用 imine 化学来根据需要解聚氨粘合剂的解
Tankut Türel1, Anna M Cristadoro2, Martin Linnenbrink2
1Polymer Performance Materials Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands.
ACS applied materials & interfaces
|December 23, 2024
概括
研究人员使用利衍生聚合物开发了新的按需解粘合剂. 这些可持续的聚氨粘合剂可轻松拆卸和回收,促进各种行业的循环经济.
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
- 可持续工程 可持续工程
背景情况:
- 传统的粘合剂会产生永久的键,使材料拆卸和回收复杂化.
- 对于可持续实践的日益增长的需求需要创新的结合解决方案.
- 按需解结合的粘合剂提供了一种选择性结合减弱或断裂的途径,以实现高效的回收利用.
研究的目的:
- 开发和评估一种具有按需脱能力的新型聚氨粘合剂.
- 在聚氨粘合剂系统中将从香中提取的基于 imine 的聚合物纳入.
- 评估新的粘合剂配方的热性能,粘合强度和可回收性.
主要方法:
- 从香和聚乙胺合成一种以胺为基础的聚醇.
- 一个组成部分的配方,基于聚乙烯的聚氨粘合剂,包含 imine polyol.
- 使用TGA和DSC等技术评估热性能 (降解温度,玻璃过渡温度).
- 使用膝盖剪切强度测试测量粘合剂性能.
- 通过imine组的酸性水解进行按需解来评估可回收性.
主要成果:
- 伊米尼聚醇改性聚氨粘合剂的热稳定性与参考系统相提并论,降解开始温度约为320°C,玻璃过渡温度约为-50°C.
- 粘合性能与参考系统相提并论,表现出1.7至2.1MPa之间的围剪切强度.
- 添加伊敏聚醇可通过酸性水解方便按需通过酸性水解解脱结合基质,从而产生无粘合剂的表面,并显示出更好的可回收性.
结论:
- 素衍生伊胺聚醇可以成功地纳入聚氨粘合剂,以创建具有可调节解特性的系统.
- 这些新型粘合剂保持了理想的热和机械性能,同时在可回收性方面提供了显著的改进.
- 开发的技术支持可持续的材料实践,并通过使结合组件的高效拆卸和再利用,为循环经济的原则做出贡献.
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