Allyson Ho

Sugar Land, TX
Age 16

Alex Thachara

Sugar Land, TX
Age 16

The Effects of Nanoparticles on Selective Gas Permeability of Thin Film Membranes Using Supercritical Fluid

The addition of inorganic nanoparticles to polymer thin flms can be highly beneficial for commercial applications. By adding nanoparticles, physical properties are enhanced. Exposing thin films to supercritical carbon dioxide produces atomic scale poorosity that can be templated to the molecular use for the supercritical solvent. The porosity is exactly the shape of the carbon dioxide molecule during vitrification. Molecules of carbon dioxide escape preferentially, followed by molecules smaller than carbon dioxide. Biological gases, such as oxygen and nitrogen, can freely pass through the voids created, and larger molecules are blocked.