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Properties of supercritical CO 2 saturated poly(ethylene glycol) nonylphenyl ether
Author(s) -
Dimitrov Krassimir,
Boyadzhiev Lubomir,
Tufeu Roland
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19990701)200:7<1626::aid-macp1626>3.0.co;2-h
Subject(s) - supercritical carbon dioxide , supercritical fluid , ether , swelling , ethylene glycol , polymer , peg ratio , solvent , viscosity , polymer chemistry , chemistry , carbon dioxide , surface tension , chemical engineering , materials science , organic chemistry , thermodynamics , composite material , physics , finance , economics , engineering
Density and viscosity of poly(ethylene glycol) nonylphenyl ether (PEG‐NPE) saturated with supercritical carbon dioxide (SC CO 2 ), as well as the interfacial tension in the PEG‐NPE‐SC CO 2 system, were evaluated for the temperature range of 323 K to 343 K and pressures of 10.0 to 25.5 MPa. Remarkable polymer swelling as a result of solvent penetration was observed, and the coefficient of swelling for the above mentioned experimental conditions was evaluated. Data obtained show that the viscosity of polymer‐rich phase is a decreasing function of both temperature and pressure. Moreover interfacial tension is a decreasing linear function of carbon dioxide density.