02406nas a2200205   4500008004100000022001400041245009600055210006900151300000800220490000700228520179900235653000802034653000702042100002102049700002602070700001802096700002102114700002102135856004402156       2021                        eng d  a2073-436000aThe Adhesion of Plasma Nanocoatings Controls the Shear Properties of GF/Polyester Composite0 aAdhesion of Plasma Nanocoatings Controls the Shear Properties of  a5930 v133 a<p>High-performance fibre-reinforced polymer composites are important construction materials based not only on the specific properties of the reinforcing fibres and the flexible polymer matrix but also on the compatible properties of the composite interphase. First, oxygen-free (a-CSi:H) and oxygen-binding (a-CSiO:H) plasma nanocoatings of different mechanical and tribological properties were deposited on planar silicon dioxide substrates that closely mimic E-glass. The nanoscratch test was used to characterize the nanocoating adhesion expressed in terms of critical normal load and work of adhesion. Next, the same nanocoatings were deposited on E-glass fibres, which were used as reinforcements in the polyester composite to affect its interphase properties. The shear properties of the polymer composite were characterized by macro- and micromechanical tests, namely a short beam shear test to determine the short-beam strength and a single fibre push-out test to determine the interfacial shear strength. The results of the polymer composites showed a strong correlation between the short-beam strength and the interfacial shear strength, proving that both tests are sensitive to changes in fibre-matrix adhesion due to different surface modifications of glass fibres (GF). Finally, a strong correlation between the shear properties of the GF/polyester composite and the adhesion of the plasma nanocoating expressed through the work of adhesion was demonstrated. Thus, increasing the work of adhesion of plasma nanocoatings from 0.8 to 1.5 mJ·m−2 increased the short-beam strength from 23.1 to 45.2 MPa. The results confirmed that the work of adhesion is a more suitable parameter in characterising the level of nanocoating adhesion in comparison with the critical normal load.</p>10aAIF10aMF1 aPlichta, Tomáš1 aŠirjovová, Veronika1 aZvonek, Milan1 aKalinka, Gerhard1 aČech, Vladimír  uhttps://www.mdpi.com/2073-4360/13/4/593