Surface composition and surface energy of Teflon treated by metal plasma immersion ion implantation

Characterization of hydrophobic and hydrophilic polythiophene–silver–copper thin film composites synthesized by DC glow discharges

“…This method requires the use of at least two liquids with known dispersive and polar contributions; however, a qualitative description of the dispersive contribution can be found in Fig. 8 [13], and consequently, the contact angles are reduced. Considering the rule of mixtures, from xN 0.45, the contribution of the metal on θ becomes more significant than the effect of roughness, which is initially the dominant factor in the PTh-Ag wettability, but as x increases, the chemical properties of the surface become more important.…”

“…It is well known that this property is governed by both, roughness and chemical properties of the surfaces. Roughness and texturing have been studied in polypyrrole, polythiophene [6,10] and some of their metal-polymer composites [11] synthesized by plasma in order to manage the superficial energy in water repellent materials [13,14]. Now in this work, polythiophene with particles of Ag and Cu (PThAg) were synthesized by DC glow discharges with the objective to study the effect of texture on the wettability of the composites.…”

Corrosion behaviour of a 2219 aluminium alloy treated with a chromate conversion coating exposed to a 3.5% NaCl solution

“…Hydrocarbon contamination is well known to be more prevalent on higher energy surfaces and its higher concentration on the intermetallic is probably due to the incorporation of Cu into this oxide, leading to an increased metallic character of intermetallic surface oxide, compared to the pure chromate coating formed on the matrix [31]. In the surrounding area carbon is more intense on the grains than in the cracks.…”

Study on Surface Properties of Polyamide 66 Using Atmospheric Glow-Like Discharge Plasma Treatment

“…N-element content has also changed. Some polar functional groups will be imported into the nylon material surface by the glow-like plasma processing [22,23], which results in the microstructural changes of the fiber surface. In addition, the relevant chemical bonds are cracked and the new functional groups are generated-all of these will be represented by the C-, O-and N-element content changes of the XPS spectrums.…”