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Effect of temperature on gas permeation of polymer blends. I. Poly(ethylene oxide)/copolyester–polyurethane
Author(s) -
Qipeng Guo,
Hechang Xu,
Dezhu Ma
Publication year - 1990
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.1990.070391111
Subject(s) - copolyester , materials science , melting point , permeation , arrhenius plot , ethylene oxide , activation energy , polyurethane , polymer , oxide , melting point depression , polymer chemistry , composite material , arrhenius equation , chemical engineering , polyester , copolymer , organic chemistry , chemistry , membrane , biochemistry , engineering , metallurgy
The transport behavior of H 2 , N 2 , and CO 2 , was studied for blends of poly(ethylene oxide) (PEO) with a copolyester–polyurethane (PU) at various temperatures from 20 to 80°C. It was found that there was an abrupt change in slope or discontinuity around the melting point of PEO in Arrhenius plot of the permeability vs. temperature. The relationships between the logarithms of gas permeability and blend composition were strongly dependent on the temperature and showed very different shapes at temperature below and above the melting point of PEO. The activation energy of gas permeation for the blends had different values below and above the melting temperature of PEO.