The properties and applications of supercritical carbon dioxide
The Properties and Applications of Supercritical Carbon dioxide Abstract In chemical sciences, a supercritical fluid is defined as any substance for which the pressure and temperature conditions that are required to maintain its original molecular integrity are beyond critical levels. Supercritical fluids are popular both as solvents and as anti-solvent in processing polymers. Supercritical fluids play an important role in polymer modification, blending of polymers, particle production, in the formation of polymer composites. Moreover, different studies suggest that the qualities of polymers that are processed with SCF are significantly higher than the quality of their counterparts that are processed with conventional toxic solvents. SCO2 is a clean and versatile solvent that has shown promising results in processing polymers compared to the noxious organic solvents or chlorofluorocarbons. SCO2 is popular both for synthesizing and processing polymers owing to its non-toxic and non-flammable properties. Moreover, it is chemically inert and inexpensive. Both these properties enhance its acceptance in the polymer industry, drying and cleaning industry, and for extracting commercial compounds from plants and soils. Hence, it is considered a strong contender for promoting the concept of Green Chemistry. This article provided a systematic review of the physicochemical properties and applications of supercritical carbon dioxide. Keywords: Review, supercritical carbon dioxide, physicochemical properties, applications, green…
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