Modification of membrane surfaces by plasma deposition of thin fluorocarbon films without affecting bulk properties

Abstract

The deposition of films from an argon plasma containing a mixture of ethylene oxide or hydrogen and perfluorohexane was tried to obtain very hydrophobic, less hydrophobic and intermediate coatings. This paper studies more extensively the deposition of a thin coating from a perfluorohexane and hydrogen plasma on polysulfone and polyhydroxybutyrate membranes to optimize their surface properties without affecting their filtering properties. The plasma deposition of smooth and very hydrophobic fluorocarbon coatings seems to increase the bio-and hemocompatibility of poorly biocompatible membranes. The treated substrates were characterized by measuring the mass variations, surface profilometry and contact angle measurements, as well as scanning electron microscopy and electron spectroscopy for chemical analysis.

Plasma‐modified halloysite nanocomposites: effect of plasma modification on the structure and dynamic mechanical properties of halloysite–polystyrene nanocomposites

“…Recently, plasma polymerization was successfully applied to alter hydrophilic surfaces, especially those of layered silicate clays 16, 17. Previously, we used this cost‐effective, time‐saving and solvent‐free technique to increase the biocompatibility of polymer membranes 18–21. To the best of our knowledge, the effects of new plasma‐modified hydrophobic surfaces of clays on the mechanical properties of PCNs have not been studied so far.…”

Pulsed Plasma Polymerization of Perfluorocyclohexane

“…This method is based upon the activation and reaction of a precursor molecule by a non-equilibrium electrical discharge these films find application as hydrophobic, , protective, , and biocompatible coatings. , Low-pressure electrical discharges are capable of generating a range of chemically reactive species from a wide variety of precursor molecules . Ions, radicals, electrons, metastables, and photons contained within the glow discharge can all contribute toward the deposition of polymeric material over all surfaces in contact with the plasma.…”

Surface and bulk compositional characterization of plasma-polymerized fluorocarbons prepared from hexafluoroethane and acetylene or butadiene reactant gases

“…5 The use of plasma-polymerized fluorocarbon coatIn order to overcome known problems of adhesion of PPFCs to their substrates, 21 an hydrogenated ings (PPFCs) to produce low-surface-energy materials has led to their application as hydrophobic, amorphous carbon (a-C : H) intermediate layer was deposited. Since adhesion of plasma-polymerprotective, 6,7 and biocompatible 8,9 coatings. PPFCs are also useful in such diverse applications as ized a-C : H films to metal substrates can be weak, 22 a thin silicon adhesion-promoting layer 23 coatings on gas permselective membranes.…”