Sorption of carbon dioxide

Sanders, E. S., Koros, W. J., Hopfenberg, H. B., Stannett, V. T. Pure and Mixed Gas Sorption of Carbon Dioxide and Ethylene in Poly(methyl methacrylate), to be pubhshed... 

Story, B. J., and Koros, W. J. (1991). Sorption of carbon dioxide/methane mixtures in poly(phenylene oxide) and a carboxylated derivative, J. Appl. Polym Sci. 42, 2613. 

The sorption of carbon dioxide can result in swelling and/or dissolution of a polymer. The extent of either/or both swelling and dissolution depends on the solubility of carbon dioxide in the polymer and/or the solubility of the polymers in carbon dioxide. When the system pressure is reduced, absorbed carbon dioxide may nucleate into bubbles and cause the formation of foam, or small defects in the polymer structure that may significantly alter the mechanical properties of the material. In addition, carbon dioxide can extract the plasticizer, if present, in the polymer and thus cause embrittlement. In this chapter, we address such solubility issues. 

Potential interactions of a supercritical fluid with a polymeric material may include the following (i) sorption of carbon dioxide by polymers (ii) swelling of polymers by carbon dioxide (Hi) dissolution of polymers in carbon dioxide (iv) dissolution of carbon dioxide in polymers (v) plasticization and decrease of the glass transition... 

Fleming, G. K. and Koros, W., Dilation of polymers by sorption of carbon dioxide at elevated pressures. 1. Silicone rubber and unconditioned polycarbonate, A/acro/no/ecw/es, 19 2285 (1986)... 

Figure T2.19 Sorption of carbon dioxide in PMMA at high pressures.

KOR Koros, W.J., Smith, G.N., and Staimett, V., High-pressure sorption of carbon dioxide in solvent-cast poly(methyl methacrylate) and poly(ethyl methacrylate) films, J. Appl. Polym. Sci., 26, 159, 1981. 

HIR Hirose, T., Mizoguchi, K., and Kamiya, Y., Dilation of polyethylene by sorption of carbon dioxide, J. Polym. Sci. PartB Polym. Phys., 24, 2107, 1986. 

Fleming, G. Koros, W. (1986) Dilation of Polymers by Sorption of Carbon Dioxide at Elevated Pressures. 1. Silicone Rubber and Unconditioned Polycarbonate. Macromol. Vol.l9, No.8, pp.2285-2291... 

K. Tanaka, H. Kita, K.I. Okamoto, Sorption of carbon dioxide in fluorinated poyimides, J. Polym. Sci., Part B Polym. Phys. 31 (9) (1993)1127-1133. 

The sorption of carbon dioxide in poiyimide has been measured with the pressure decay method in a single pressure volume set-up at 25 C. The volume of the cell is 250 cm and the volume of the pol rmer sample is 0.3 cm. At 1 bar and at 8 bar of carbon dioxide pressure a pressure decay of 1.46 kPa and 5 58 kPa, respectively have been measured. 

Dilation of Polymers by Sorption of Carbon Dioxide at Elevated Pressures. 1. Silicone Rubbers and Unconditioned Polycarbonate. 

The morphology of the porous carbons was characterized by small an e X-ray scattering (SAXS) as well as nitrogen sorption at 77K and sorption of carbon dioxide at 273 K. 

KAR Karpova, A.L., Rozanova, E.A., Ostrovskii, V.E., and Timashev, S.F., Calorimetric study of the sorption of carbon dioxide and oxygen by silar block copolymer (Russ.), Vysokomol. Soedin., Ser. B, 30, 15, 1988. 

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