Synthesis of Film Nanocomposites under Laser Ablation and Drift Embedding of Nanoparticles into Polymer in Supercritical Carbon Dioxide

Abstract

A new approach to the formation of film nanocomposites based on combining the stage of nanoparticle synthesis by pulsed laser ablation in supercritical (SC) carbon dioxide and the stage of nanocomposite formation by the accelerated drift embedding of nanoparticles in SC-CO₂ in one reactor and in a single technological process is proposed and implemented. Photoluminescent film nanocomposites based on a porous copolymer of polytetrafluoroethylene–vinylidene fluoride and ruby nanoparticles were obtained, and their properties are determined. The results of an analysis of the film nanocomposites using scanning electron microscopy showed that the dimensions of the ruby particles embedded in the polymer matrix reached hundreds of nanometers. The film composites were further subjected to hot pressing at a pressure of 20 MPa and a temperature of 160°C, which significantly improved their mechanical strength and transparency.