D.Yu. Zalepugin, N.A. Tilkunova, I.V. Chernyshova, M.I. Vlasov
Treatment of Ultra High Density Polyethylene and Polyethylene Terephthalate in Sub- and Supercritical Freons Media
Process of saturation of ultra high density polyethylene with sub- and supercritical
freons and supercritical carbon dioxide was investigated for the first time. It was
shown that subcritical freon R22 can be absorbed in much larger amounts by these
polymers than subcritical freon R410а, as well as supercritical R23 and carbon dioxide,
which makes it promising for use in the processes of impregnation and sterilization
Key words: polymers, supercritical fluids, subcritical freons, carbon dioxide.