Study on Hierarchically Buckled Surface Regulation for Stretchable Porous Microarchitectures Fibers

Breath figure technology's potential for surface modification of fibers to enable new functions in wearables is attractive. However, the development of extensible, multifunctional elastic fibers with hierarchically porous architectures remains a difficulty. We study a new technique for fiber surface modification based on the modified breath figure technique, which includes material selection, interfacial self-assembly, and pre-stretch ratio. The fabricated hierarchically porous elastic fibers exhibit features like finger joint buckled skin and a unique stretchable buckled porous structure. Influential factors such as elastic fiber base diameter, brick polymer solution concentration, and pre-stretch ratio were studied. This study presents a novel design and preparation of functional fiber materials with porous microstructures.