title: Superamphiphobic nanofibrous membranes for effective filtration of fine particles.
abstract: The worldwide demands are rising for an energy-efficient and cost-effective approach that can provide advanced nanofibrous membranes with high filtration performance and superior antifouling properties. Here we report a novel synthesized fluorinated polyurethane (FPU) modified nanofibrous membrane optimized to achieve oil and non-oil aerosol particle filtration. By employing the FPU incorporation, the polyacrylonitrile/polyurethane (PAN/PU) composite membranes were endowed with superhydrophobicity with a water contact angle of 154° and superoleophobicity with an oil contact angle of 151°. Morphology, surface wettability, porous structure, and filtration performance could be manipulated by tuning the solution composition as well as the hierarchical structure. Furthermore, the as-prepared membranes can capture, for the first time, a range of different oil aerosol particles in a single-unit operation, with >99.9% filtration efficiency, by using the combined contribution of fiber diameter and surface roughness acting on the objective particles. Exemplified here by the construction of superamphiphobic nanofibrous membrane, numerous applications of this medium includes high efficiency particulate air filters, ultra-low penetration air filters, and respiratory protection equipment.
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Na
authors.initials: N
authors.lastname: Wang
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Zhigao
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: College of Textiles, Donghua University, Shanghai 201620, China.
authors.forename: Junlu
authors.initials: J
authors.lastname: Sheng
authors.affiliation: Petrochemical Research Chair, Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
authors.forename: Salem S
authors.initials: SS
authors.lastname: Al-Deyab
authors.affiliation: Nanomaterials Research Center, Modern Textile Institute, Donghua University, Shanghai 200051, China.
authors.forename: Jianyong
authors.initials: J
authors.lastname: Yu
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China; Nanomaterials Research Center, Modern Textile Institute, Donghua University, Shanghai 200051, China. Electronic address: binding@dhu.edu.cn.
authors.forename: Bin
authors.initials: B
authors.lastname: Ding
mesh_terms: D000336:Aerosols / Q000302:isolation & purification*; D055119:Elastic Modulus; D004867:Equipment Design; D005374:Filtration / Q000295:instrumentation*; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D008567:Membranes, Artificial; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011140:Polyurethanes / Q000737:chemistry*; D017155:Wettability
chemical_list: D000336:Aerosols; D005465:Fluorocarbon Polymers; D008567:Membranes, Artificial; D011140:Polyurethanes
keywords: Electrospinning; Filtration performance; Hierarchical structure; Superamphiphobic