期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 33, 页码 28210-28218出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b08191
关键词
superhydrophobic microporous membranes; waterproof and breathable membrane; perfluorinated-free; electrospinning method
资金
- National Natural Science Funds for Distinguished Young Scholar [51625306]
- Key Project of National Natural Science Foundation of China [21433012]
- National Natural Science Foundation of China [21406258, 51603229, 51403231]
- Natural Science Foundation of Jiangsu Province [BE2015072]
Superhydrophobic membranes with extreme liquid water repellency property are good candidates for waterproof and breathable application. Different from the mostly used strategies through either mixing or postmodifying base membranes with perfluorinated compounds, we report in this work a facile methodology to fabricate superhydrophobic microporous membranes made up of pure poly(vinylidene fluoride) (PVDF) via a high-humidity induced electrospinning process. The superhydrophobic property of the PVDF microporous membrane is contributed by its special microsphere-fiber interpenetrated rough structure. The effective pore size and porosity of the PVDF membranes could be well tuned by simply adjusting the PVDF concentrations in polymer solutions. The membrane with optimized superhydrophobicity and porous structure exhibits improved waterproof and breathable performance with hydrostatic pressure up to 62 kPa, water vapor transmission rate (WVT rate) of 10.6 kg m(-2) d(-1), and simultaneously outstanding windproof performance with air permeability up to 1.3 mm s(-1). Our work represents a rather simple and perfluorinated-free strategy for fabricating superhydrophobic microporous membranes, which matches well with the environmentally friendly requirement from the viewpoint of practical application.
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