Synthesis and Characterization of Healable Waterborne Polyurethanes with Cystamine Chain Extenders
作者:Dae-Il Lee、Seung-Hyun Kim、Dai-Soo Lee
DOI:10.3390/molecules24081492
日期:——
In this study, environmentally friendly, self-healing waterborne polyurethanes (WPUs) were prepared based on the disulfide metathesis reaction in cystamine. The cystamine acted as a chain extender in the WPU film, which showed a high mechanical strength of 19.1 MPa. The possibility of self-healing reaction was simultaneously modeled via liquid chromatography–mass spectrometry (LC-MS). WPU was confirmed
在这项研究中,基于胱胺中的二硫化物复分解反应制备了环保、自修复的水性聚氨酯 (WPU)。胱胺在 WPU 薄膜中充当扩链剂,显示出 19.1 MPa 的高机械强度。通过液相色谱 - 质谱(LC-MS)同时模拟自愈反应的可能性。在划痕试验后,WPU 被证实可以通过热自修复表面裂纹,并通过比较切割和修复试验前后的机械性能来测量效率。此外,证实在 WPU 中发生二硫化物-硫醇交换反应,其中胱胺作为扩链剂和 2-巯基乙醇。热压测试证实了对 WPU 进行再加工的可能性。