A.O. Rybaltovskii, V.M. Buznik, Yu.S. Zavorotny, N.V. Minaev, P.S. Timashev, S.N. Churbanov, V.N. Bagratashvili
Synthesis of Film Nanocomposites by Laser Ablation and Drift Embedding of Nanoparticles into Polymer in Supercritical Carbon Dioxide
A new approach to the formation of film nanocomposites was proposed and realized
based on the combination of two stages: nanoparticle synthesis by pulsed laser ablation
in supercritical (SC) carbon dioxide and formation of the nanocomposite using the
accelerated drift embedding of nanoparticles in SC-CO2 in one reactor and in a single
technological process. Photoluminescent film nanocomposites based on a porous
polytetrafluoroethylene-vinylidene fluoride copolymer and ruby nanoparticles were
obtained and characterized. Scanning electron microscopy data showed that the size of
the ruby particles embedded into the polymer matrix reached hundreds of nanometers.
The subsequent hot pressing of film nanocomposites at 20 MPa and 160°C significantly
improved their transparency and mechanical strength.
Key words: film nanocomposites, drifted embedding in SCF, laser ablation, nanorubines, porous copolymer