Surface roughness and wettability of wool fabrics loaded with silver nanoparticles: Influence of synthesis and application methods

Abstract

Hydrophilization of wool fabrics was performed by silver nanoparticles with different surface charge using three different methods: exhausting, pad–dry–cure and in situ synthesis. Dynamic wetting measurements and surface topography analysis were used to evaluate surface changes on wool fabrics. The wool samples in situ loaded revealed the highest fabric roughness and porosity, while the use of the pad–dry–cure method leads to the lowest fabric porosity, and its roughness values approximately were the same as those for samples loaded with the exhaustion method. The results revealed that loading silver nanoparticles with high surface charges onto wool fabrics via the exhaustion method can significantly improve the hydrophilicity of wool fibre surface. The possible reasons for this improvement are discussed.

Effects of Oxygen Plasma Treatment on the Physical and Chemical Properties of Wool Fiber Surface

“…1, shows that it has an average of arithmetic mean roughness value of 149 nm. This is in agreement with other data reported [22,23] which were collected using 3D confocal and scanning electron microscopy. However, this value depends on the wool fiber type as well as applied characterization methods.…”

“…The R Srl is a hybrid parameter was introduced by Wenzel [24]. This factor is the ratio between the a real surface (interface) area and the geometric projected (plain) area [22,25]. By comparison of roughness factors of these two plasma treated samples, we can conclude that an increase in time of oxygen plasma treatment leads to higher roughness (R a ) and lower R srl value.…”

Facile and Eco-Friendly Fabrication of Colored and Bioactive Silk Materials Using Silver Nanoparticles Synthesized by Two Flavonoids

“…Silver nanoparticles (AgNPs), which are famous for broad-spectrum and high-efficient antibacterial effects due to their unique properties (e.g., nano-scale size, various shapes, and large surface area), have been widely used in many fields such as electronics, cosmetics, coatings, packaging, and biotechnology [ 5 , 6 , 7 ]. The synthesis and applications of AgNPs have already become a research hotspot in recent years [ 8 , 9 ]. A variety of techniques including laser ablation, gamma irradiation, electron irradiation, chemical reduction, photochemical methods, biological synthetic methods, etc.…”

Influence of Incorporating Silver Nanoparticles in Protease Treatment on Fiber Friction, Antistatic, and Antibacterial Properties of Wool Fibers

“…Pristine wool fiber comes with more or less major deficiencies, i.e., natural hydrophobicity of the outer surface due to the fatty acid layer, surface roughness due to its structure of cuticle, and a good media for the growth and propagation of bacteria under appropriate temperature and humidity. For the former two, several techniques have been applied to decompose the fatty surface layer [3][4][5] and/or coating or fabricating the hydrophilic materials over the layer of fatty acids on the surface wool fibers [6][7][8]. However, such treatments often cause some losses in mechanical properties and/or compromise on its natural feel and comfort.…”