Zhi Yinglin, Shao Yan, Xia Rui, Lin Weikun, Cai Daohang, Zhao Fuxing, Dong Jiufeng, Li Qingxian, Wang Zihao, Li Lixuan, Gu Long, Tian Peng, He Zhen, Wang Jinlong, Ning Guiling, Li Baowen, Yang Canhui, Wang Hong, Yu Shuhong, Yu Yanhao
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
Nat Commun. 2025 Apr 15;16(1):3562. doi: 10.1038/s41467-025-58844-w.
Oxide/elastomer composites combine the functional attributes of metal oxides with the mechanical deformability of elastomers, but face the challenge of balancing oxide loading and stretchability as ceramic fillers decrease the entropic elasticity of polymer networks. Here, we report an interfacial composite design that enables high oxide fraction and large stretchability by minimizing the contact area yet maximizing the binding strength between the oxide and elastomer. The elongation at break for an interfacial composite with 80 vol% of oxides reaches 500%, whereas that of a regular bulk composite with the same oxide fraction is 20%. These composites are synthesized based on a Marangoni co-assembly process with tuned interfacial tension and reaction at the water-oil interface. The assembly chemistry is nearly independent of oxides' sizes, compositions, geometries, and functions, making this interfacial structure broadly applicable to optical, electric, magnetic, and thermal-conducting oxides. Compared to bulk composites, the interfacial composites deliver larger magnetic actuation, lower thermal resistance, and higher conformability with nonplanar surfaces, providing rich implications for designing intelligent and electronic systems.
氧化物/弹性体复合材料结合了金属氧化物的功能特性和弹性体的机械可变形性，但面临着平衡氧化物负载量和拉伸性的挑战，因为陶瓷填料会降低聚合物网络的熵弹性。在此，我们报道了一种界面复合材料设计，通过最小化接触面积但最大化氧化物与弹性体之间的结合强度，实现了高氧化物含量和大拉伸性。含80体积%氧化物的界面复合材料的断裂伸长率达到500%，而具有相同氧化物含量的常规本体复合材料的断裂伸长率为20%。这些复合材料是基于在水-油界面处具有调谐界面张力和反应的马兰戈尼共组装过程合成的。组装化学几乎与氧化物的尺寸、组成、几何形状和功能无关，使得这种界面结构广泛适用于光学、电学、磁学和导热氧化物。与本体复合材料相比，界面复合材料具有更大的磁驱动、更低的热阻以及与非平面表面更高的贴合性，为设计智能和电子系统提供了丰富的启示。
