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Copolymerization of carbon dioxide and ethyl vinyl ether at subcritical and supercritical conditions
Author(s) -
Yokoyama Chiaki,
Kawase Yasuo,
ShibasakiKitakawa Naomi,
Smith Richard L.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12553
Subject(s) - supercritical carbon dioxide , copolymer , supercritical fluid , catalysis , yield (engineering) , polymer , materials science , ether , carbon dioxide , polymer chemistry , mass fraction , fraction (chemistry) , vinyl ether , mole fraction , chemistry , organic chemistry , composite material
The copolymerization of carbon dioxide (CO 2 ) and ethyl vinyl ether (EVE) at subcritical and supercritical conditions was studied in the presence and absence of an aluminum triacetylacetonate [Al(acac) 3 ] catalyst. The experiments took place at 313–423 K and 4–15 MPa and for reaction times of 12–120 h. We confirmed that CO 2 could copolymerize with EVE with or without the Al(acac) 3 catalyst, regardless of whether the vessel wall material was Teflon or stainless steel. With the Al(acac) 3 catalyst, a maximum yield of 3.2% polymer was obtained at 338 K, 6 MPa, and 45 h. The maximum value of the average CO 2 fraction was about 50% (100% of the theoretical) at 338 K, 15 MPa, and 45 h. Results confirmed the mechanism and pathways proposed earlier by Soga et al. (1973). There was a trade‐off between yield and the CO 2 fraction incorporated into the polymer as conditions changed from subcritical to supercritical. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3167–3174, 2003