【作者】 禚淑云； 张公正； 石金丽； 刘欢庆； 李欢军；

【Author】 Shuyun Zhuo;Gongzheng Zhang;Jinli Shi;Huanqing Liu;Huanjun Li;Beijing Institute of Technology, School of Chemical Engineering and Environment;

【机构】 北京理工大学化工与环境学院；

【摘要】 自修复聚合物由于可以显著延长材料寿命、提高产品安全性能及可持续性而受到广泛研究。本文利用原位聚合方法,由丙烯酸甲氧基乙酯和N-(甲氧基甲基)甲基丙烯酰胺制备了一种具有良好自修复性能的聚合物。同时,该聚合物还表现出良好的形状记忆行为。N-(甲氧基甲基)甲基丙烯酰胺上的-NH-基团可在分子链间形成氢键,这种弱的可逆作用不仅可以作为物理交联点获得良好的机械性能,同时还赋予该弹性体材料优异的自修复性能,修复效率高达95%。断面间氢键的重新形成及分子链的缠绕作用使聚合物可以在相对低温下可以实现快速、高效的自修复。此外,在该体系的设计和制备方法将自修复和形状记忆结合在一起,为其未来的应用开拓了广阔的发展空间。更多还原

【Abstract】 Self-healing polymeric materials are under intense investigation due to their self-repair ability which would significantly extend a material’s lifespan, improve product safety, and ensure sustainability. Here, the superior self-healing polymers were readily prepared by in-situ polymerization of methoxyethyl acrylate and N-(Methoxymethy) methacrylamide. Meanwhile, the polymers show excellent shape memory effect. The –NHgroups of N-(Methoxymethy) methacrylamide can form hydrogen bonds between the molecular chains, the reversible weak interactions not only act as physical cross-linker resulting in good mechanical properties, but also lead to the excellent self-healing performance with healing efficiency up to 95%. Reformation of hydrogen bonds between two damaged surfaces and entanglement of polymer chains make rapid and efficient self-healing possible under relatively low temperature. The interesting design and fabrication of the polymers to combine self-healing and shape memory properties might open up a promising avenue for future application.更多还原