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Thromboelastography (TEG) Cups and Pins with Different PECVD Coatings: Effect on the Coagulation Cascade in Platelet‐poor Blood Plasma

“…To overcome what the authors state to be inherently poor blood‐to‐plastic adhesion and reproducibility, and to improve fibrin‐TEG cup interactions, Schubert et al patented the use of surface modification of the polymer parts via the use of low‐pressure glow discharges in various gases such as N 2 , O 2 , air, H 2 O, or noble gas; indeed, their stated principal objective was roughening of the polymer surface by plasma‐induced ablation or etching . Now, extensive work by our group and other laboratories over the years has shown very clearly that simple plasma treatment‐induced surface modification of polymers, which beside ablation has the main effect of grafting new chemical functionalities onto a very shallow surface‐near layer, has drawbacks compared with the deposition of thin organic plasma polymer (PP) coatings on the surface. Those drawbacks include time‐dependent reversal of plasma‐induced desirable hydrophilic properties, so‐called hydrophobic recovery, and much lower concentrations of the desirable chemical functional groups at the surface.…”

Enhanced surface hydrophobisation for improved performance of carbon aerogel electrochemical capacitor

“…hydroxyl) is seldom complete. Chemical methods such as coating of organosilicon or fluorination by fluorocarbon (C 2 F 4 or C 2 F 6 ) either by plasma surface treatments [14], or through chemical reaction in liquid or gas phase in the case of organosilicon compounds [15,16], lead to the hydrophobisation of the surface, but cause a dramatic decrease in the pore volumes. Budarin et al [17] and Cosnier et al [18] improved hydrophobisation of activated carbon by reaction of vinyltrimethoxysilane (vtmos) in liquid phase, but large amounts of vtmos were employed and pore volumes of modified carbons decreased considerably, suggesting that this method is unsuitable for modification of carbon for EDLC application.…”

Tuning the Acid/Base Surface Character of Carbonaceous Materials by Means of Cold Plasma Treatments

“…The surface chemical features of CB granules/powders are reported to be successfully modified by low temperature plasma treatments at low or atmospheric pressure, in many electrical and geometrical systems. Most deal with O 2 ‐based feeds, with the aim of increasing the surface density of the O‐containing functionalities and the surface area of the material, and consequently to improve adsorption and adhesion properties 3–6…”