Membranes are considered as a promising technology for separation and filtration processes. Here, novel polyvinylidene fluoride (PVDF) nanofibrous multilayer membranes were fabricated by wire-based industrial electrospinning equipment following by a lamination process. The lamination process was optimised under various applied temperature, force of lamination, and lamination time. Air permeability and burst-pressure tests were run to determine the optimum membranes for filtration application. The structures of the prepared membranes were characterised by scanning electron microscopy and pore-size analysis. The hydrophilic properties of the membranes were evaluated using water contact angle measurement, and the mechanical strength of the membranes was analysed. Air and water filtration tests were run to find the possible application of prepared membranes. The air filtration results showed that membranes had high filtration efficiencies: Over 99.00% for PM2.5, and PM0.1. The water filtration results indicated that permeability of the membranes changed from 288 to 3275 L/m²hbar. The successful preparation of such an interesting material may provide a new approach for the design and development of electrospun filter membranes.

Department of Nanotechnology and Informatics Institute of Nanomaterials Advanced Technologies and Innovation Technical University of Liberec Studentska 1402 2 46117 Liberec Czech Republic

Institute for New Technologies and Applied Informatics Faculty of Mechatronics Studentska 1402 2 46117 Liberec Czech Republic

National Polytechnic Institute of Chemical Engineering and Technology 4 Allée Emile Monso CS 44362 31030 Toulouse CEDEX 4 France

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