The Mechanical Properties Relationship of Radiation-Cured Nanocomposites Based on Acrylates and Cationic Polymerized Epoxies and the Composition of Silane-Modified Tungsten Disulfide Nanoparticles

The effect of semiconducting tungsten disulfide (WS2) nanoparticles (NPs), functionalized by either methacryloxy, glycidyl, vinyl, or amino silanes, has been studied in photocuring acrylate and epoxy resins (the latter photocured according to a cationic mechanism). curing time, degree (DC), thermal effects, mechanical properties the radiation-cured were investigated. X-ray photoelectron spectroscopy (XPS) transmission electron microscopy (TEM) analyses confirmed that silane coating was formed (1–4 nm) on NPs’ surface having thickness 1–4 nm. Fourier transition infrared (FTIR) used determine DC nanocomposite resin. time resin, at 345–385 nm wavelength, 10 20 s, while for acrylate, 7.5 min, reaching 92% 84% acrylate. glass temperature (Tg) acrylates presence WS2 NPs increased. In contrast displayed no significant variations Tg. It found treatments enhanced DC. Significant increases impact resistance enhancement shear adhesion strength observed when treated with vinyl silane. A previous study shown addition concentration 0.5 wt.% is optimal loading improving resin’s properties. This supports these earlier findings not only unmodified but also those moieties. opens new vistas polymers general incorporating NPs.