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    A hierarchical porous membrane achieved by femtosecond laser scribing with water-repellent, highly breathable and photo-thermal ability

    Year: 2022

    Journal: Opt. Laser Technol., Volume 152, AUG

    Authors: Wu, Zhipeng; Wu, Junrui; Wang, Lingxiao; He, Yuchun; Wu, Tingni; Zhu, Zhuo; Yin, Kai

    Organizations: National Natural Science Foundation of China [52075557, 51805553]; Science and Technology Innovation Program of Hunan Province [2021RC3011]; Nat-ural Science Foundation of Hunan Province [2021JJ20067]

    Keywords: Femtosecond laser; Multifunctional membranes; Water-repellent; Breathable; Photo-thermal

    The multifunctional membranes play an important role in our daily life as well as in scientific research such as the protective clothing and membrane distillation. Here, a kind of water-repellent, highly breathable and photo thermal multifunctional membrane was fabricated by femtosecond laser one-step direct writing. The as-prepared membrane exhibited strong repulsive and low adhesion to various liquids (water, tea, milk, coffee and glycerin). Moreover, the membrane also shown good stability in the related tests of surface wettability. In addition, it provided good permeability to both water vapor and ordinary air based on its porous structures. In the comparative test of the photothermal properties with the pristine polytetrafluoroethylene (PTFE) membrane, it also showed excellent performance of higher absorption rate and rapid temperature rise.
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