Incorporation of PVDF Nanofibre Multilayers into Functional Structure for Filtration Applications
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Date
2019-09-29
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Publisher
MDPI
Abstract
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.
Description
Subject(s)
petroleum hydrocarbons decontamination, electrospinning, PVDF, HEPA filter, wastewater, nanofiber