Behaviors of Perfluorocarbon Emulsion during Dissolution of Oxide Layers

Abstract

This study investigates the dissolution behavior of oxide layers containing radionuclides using perfluorocarbon (PFC) emulsion as a reusable medium. Chemicals such as PFC, anionic surfactant, and H2SO4 are used for preparing the PFC emulsion, and emulsified using an ultrasonication process. The FTIR results show O–H stretching that is formed by the interaction of the carboxyl group of the anionic surfactant with the hydroxyl group of water containing H2SO4, and find that the H2SO4 can be homogeneously dispersed in the PFC–anionic surfactant–H2SO4 emulsion. The dissolution test of the simulated Cr2O3 specimen is conducted using PFC emulsion containing KMnO4. Through the weight losses of specimens and Scanning Electron Microscope-Energy Dispersive X-ray Spectrometer (SEM-EDS) analysis, it is confirmed that the Cr2O3 layer on the SUS304 specimen is easily dissolved using PFC emulsion. During the dissolution of the Cr2O3, it is observed that the dispersed H2SO4–KMnO4 became unstable and separated from PFC emulsion. Based on these results, the behavior of the PFC emulsion during the dissolution of the oxide layer is explained.

Vaporization of perfluorocarbon attenuates sea-water-drowning-induced acute lung injury by deactivating the NLRP3 inflammasomes in canines

“…Perfluorocarbons (PFCs) are colorless and odorless molecular liquids composed of carbon and fluorine with features such as a high level of gas dissolvability in water, rapid release, low surface pressure, high volume, average volatility, favorable histo-compatibility, and no absorption or metabolism in vivo [7,[10][11][12]. Partial liquid ventilation with perfluorocarbons improves the gas exchange, breathing mechanism, and lung structure in many acute lung injury models [13][14][15][16].…”