Temperature-Modulated Interfacial Synthesis of Fully Aromatic Polyurea for Superior Solvent/Thermal-Resistant Separation

• DOI: 10.1021/acsmaterialslett.4c00568
• Publication Date: 2024-04-10T12:51:20Z
• Authors: Jia-Hui Xin; Chang Liu; Jin-Bo Li; Bianbian Guo; Cheng-Ye Zhu; Chao Zhang; Hao-Cheng Yang; Hong-Qing Liang; Zhi-Kang Xu
• Keywords: Polyurea

Polyurea, owing to its superior solvent resistance and thermal/acid stability, has emerged as an attractive platform replace the benchmark polyamide membranes for various applications, especially in harsh separation scenarios. Herein, we present effective strategy elaborate a fully aromatic polyurea membrane (FAPM) that enables solvent-/thermal-resistant performances through temperature-modulated interfacial polymerization at alkane-ionic liquid interface. The key of our design lies harnessing exceptional solvency ionic develop polyamines instead conventional aliphatic ones, combining synthesis overcome inherently sluggish kinetics toluene diisocyanate boosting their reaction rate by 466 times. With this design, defect-free robust FAPM can be facilely synthesized short time deliver high stable performance even dimethylformamide 80 °C. This work introduces novel direction exploiting materials toward environments.