N-Cl functional groups have been widely utilized for antimicrobial and detoxification purpose. However, along with the high reactivity of N-Cl moiety, long term stability of N-Cl moiety under ambient condition is of special interest for final applications. Diverse organic moieties have been developed to enhance N-Cl stability, and hydantoin N-Cl groups are generally accepted as a promising candidate. Here, N-Cl functionalized electrospun nanofibers are prepared via surface functionalization method for fabrication of catalytic nanofiber mat against chemical warfare agent. Thermoplastic polyurethane (TPU) containing aboudant pandent azide moiety is firstly synthesized, and nanofiber web is prepared via electrospinning. Hydantoin functional groups that are well-known moiety to stabilize N-Cl functional groups are introduced via surface click reaction. The storage stability of N-Cl groups from surface reaction is superior than that of bulk reaction with maintaining their catalytic activity for decomposition of chemical warfare agents. In order to increase mechanical properties of nanofiber web, amount of hydantoin groups on surfaces has been controlled by blending of normal TPU with azide TPU, and blended nanofiber web maintains their inherent flexibility after hydantoin functionalization and N-chlorination. Optimized blending conditions to achieve both of high N-Cl stability and enhanced catalytic activity have been traced. Surface rich N-Cl groups show better stability with maintaining their inherent catalytic activities.

N-Cl官能团已被广泛用于抗菌和排毒目的。然而，随着N-Cl部分的高反应性，N-Cl部分在环境条件下的长期稳定性对于最终应用特别重要。已经开发出各种有机部分以增强N-Cl的稳定性，并且乙内酰脲N-Cl基团通常被认为是有希望的候选物。在此，通过表面官能化方法制备了N-Cl官能化的电纺纳米纤维，以制备抗化学战剂的催化纳米纤维垫。首先合成了含有大量悬臂叠氮化物部分的热塑性聚氨酯（TPU），并通过静电纺丝制备了纳米纤维网。乙内酰脲官能团是稳定N-Cl官能团的众所周知的部分，是通过表面点击反应引入的。来自表面反应的N-Cl基团的储存稳定性优于本体反应，同时保持了其对化学战剂分解的催化活性。为了增加纳米纤维网的机械性能，已经通过将普通TPU与叠氮化物TPU混合来控制表面上的乙内酰脲基团的量，并且混合的纳米纤维网在乙内酰脲功能化和N-氯化后保持其固有的柔性。已经找到了实现高N-Cl稳定性和增强催化活性的最佳混合条件。富含表面的N-Cl基团在保持其固有催化活性的同时显示出更好的稳定性。