Surface wettability modification of poly(vinylidene fluoride) and copolymer films and membranes by plasma treatment
authors Correia, DM; Nunes-Pereira, J; Alikin, D; Kholkin, AL; Carabineiro, SAC; Rebouta, L; Rodrigues, MS; Vaz, F; Costa, CM; Lanceros-Mendez, S
nationality International
journal POLYMER
author keywords PVDF; PVDF copolymers; Plasma treatments; Oxygen; Argon; Surface wettability
keywords PVDF MEMBRANES; VINYLIDENE FLUORIDE; BATTERY SEPARATORS; POLYMERS; O-2; AR; BIOCOMPATIBILITY
abstract This manuscript reports on the modification of the surface wettability of poly (vinylidene fluoride) (PVDF) and PVDF copolymer films and membranes by plasma treatments at different conditions, under oxygen and argon atmospheres. It is shown that a more pronounced decrease of the contact angle after O-2 plasma treatments is obtained, with a decrease of similar to 20-30 degrees for PVDF and its copolymers films, leading also to superhydrophilic membranes. This effect is related to a defluorination process, followed by the incorporation of oxygen atoms onto the surface of membranes that occurs during the surface modification. The influence of plasma treatments on surface morphology and topography was studied by atomic force microscopy, showing a decrease in the mean surface roughness with the plasma treatments, being more noticeable for Ar treatments. Finally, it is also shown that plasma treatments under Ar and O-2 did not induce modifications in the physicochemical and thermal properties of PVDF and PVDF copolymers. The chemical reaction mechanism after plasma treatment is proposed for the different copolymers.
publisher ELSEVIER SCI LTD
issn 0032-3861
isbn 1873-2291
year published 2019
volume 169
beginning page 138
ending page 147
digital object identifier (doi) 10.1016/j.polymer.2019.02.042
web of science category Polymer Science
subject category Polymer Science
unique article identifier WOS:000464380800017
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 4.231
5 year journal impact factor 3.921
category normalized journal impact factor percentile 88.202
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