Immobilization of Surface Active Compounds on Polymer Supports Using Glow Discharge Processes

Low‐Pressure Plasma Methods for Generating Non‐Reactive Hydrophilic and Hydrogel‐Like Bio‐Interface Coatings – A Review

“…Besides the “post‐irradiation” approach, plasma grafting involving “direct irradiation” of adsorbed surfactants has also been used successfully to functionalize surfaces with SO 4 /SO 3 groups. In this method, surfactants, which contained SO 4 functionalities such as sodium dodecyl sulfate (SDS), SO 4 ‐modified polyethylene oxide (PEO), and sodium 10‐undecene SO 4 were adsorbed on the polymer substrate prior to treatment with Ar plasma. Although the quantity of the sulfur groups decreased with longer Ar plasma treatment times due to etching, its chemical state remained as SO 4 .…”

“…In this method, surfactants, which contained SO 4 functionalities such as sodium dodecyl sulfate (SDS), SO 4 ‐modified polyethylene oxide (PEO), and sodium 10‐undecene SO 4 were adsorbed on the polymer substrate prior to treatment with Ar plasma. Although the quantity of the sulfur groups decreased with longer Ar plasma treatment times due to etching, its chemical state remained as SO 4 . This direct irradiation technique provided specific chemical species but resulted in an immobilization efficiency as low as 6% for SDS or 25% for sodium 10‐undecene SO 4 .…”

“…This efficiency depended on optimizing the adsorption of surfactants and the length of Ar plasma treatment time. To maximize grafting efficiency, the adsorption of surfactants depended on a range of issues such as the thickness of the adsorbed surfactant layer, critical micelle concentration, length of alkyl chain, and degree of saturation…”

Preparation of an Amorphous 80LiCoO₂·20Li₂SO₄ Thin Film Electrode by Pulsed Laser Deposition

“…In the S 2p spectra of the amorphous thin film, the doublet peaks of S 2p 3/2 and S 2p 1/2 appear at approximately 168.5 and 169.7 eV respectively, and can be assigned to the SO 4 2¹ unit; 19 these peaks are also detected in the case of the milled powder. In addition, doublet peaks at approximately 166.5 and 167.7 eV attributable to the SO 3 2¹ unit 20 are observed with a low intensity. These peaks are not observed in the milled powder, suggesting that the prepared thin film contained small amounts of SO 3 2¹ ions.…”

Surface modification studies by atomic force microscopy for Ar-plasma treated polyethylene

“…1 Recently, a method called plasma immobilization, by which it is possible to introduce specific functional groups at polymeric surface, was developed by Hoffman and coworkers 11 and have received increasing attention. The applicability of the immobilization method has been demonstrated by researchers [11][12][13][14][15] as a powerful tool for surface-specific modification method. For example, carboxylate, sulfate, amine, and poly(ethylene oxide) groups were introduced at polymeric surfaces including PE and PP by above-mentioned researchers.…”