Interfacial design is one of the most promising ways in improving mechanical properties of nanocomposites. In this work, a multifunctional aerogel with excellent mechanical performances, sensing sensitivity, and fire retardancy is fabricated by taking advantage of metal coordination between biopolymer and Fe³⁺. Montmorillonite (MMT) nanosheets are added to induce a ‘brick and mortar’ structure. The coordination remarkably reduces structural defects, leading to well-formed lamellas that can effectively distribute stress under sever compression without plastic deformation. The structural merits impart the aerogel highly reversible compressibility even at 99% strain and superior durability. Besides, it demonstrates high sensing performance in wearable health monitoring devices, and shows fire resistance property that can maintain elasticity in a flame. The work offers a facile and effective method to create multifunctional aerogels from various polymers.

界面设计是改善纳米复合材料力学性能的最有前途的方法之一。在这项工作中，通过利用生物聚合物和Fe ³⁺之间的金属配位，制造了具有优异机械性能，感测灵敏度和阻燃性的多功能气凝胶。。添加蒙脱土（MMT）纳米片以诱导“砖和砂浆”结构。配位显着减少了结构缺陷，从而形成了结构良好的薄板，这些薄板可以在严重压缩下有效地分散应力而不会发生塑性变形。结构优点使气凝胶即使在99％的应变下仍具有高度可逆的压缩性和出色的耐久性。此外，它在可穿戴健康监测设备中显示出高传感性能，并显示出可以保持火焰弹性的耐火性能。这项工作提供了一种简便有效的方法，可以从各种聚合物中制备多功能气凝胶。