- Application of poly(phthalazinone ether sulfone ketone)s to gas membrane separation
- 点击次数：
- 论文类型： 期刊论文
- 发表时间： 1999-04-01
- 发表刊物： JOURNAL OF APPLIED POLYMER SCIENCE
- 收录刊物： Scopus、SCIE
- 卷号： 71
- 期号： 14
- 页面范围： 2385-2390
- ISSN号： 0021-8995
- 关键字： poly(phthalazinone ether sulfone ketone)s; gas separation; permeability; selectivity; composite membrane
- 摘要： A series of poly(phthalazinone ether sulfone ketone) (PPESK) copolymers containing different component ratios of bis(4-fluorodiphenyl) ketone and bis(4-chlorodiphenyl)sulfone with respect to a certain amount of 4-(4-hydroxyphenyl)-2,3-phthalazin-1-one were synthesized by polycondensation. Glass transition temperatures of these polymers were adjusted from 263 degrees C to 305 degrees C by changing the ratios of reactants. Gas permeability and selectivity of the dense membranes of the polymers for three kinds of gases (CO2, O-2, and N-2) were determined at different temperatures. The result indicated that the membrane of PPESK (S/K = 1/1, mol ratio) had an excellent gas separation property. Permeability of the polymer membranes for CO2, O-2, and N-2 was P-CO2 = 4.121 barrier, P-O2 = 0.674 barrier, and P-N2 = 0.0891 barrier, respectively. Separation factors of alpha(O2/N) and alpha(CO2/N2) were 7.6 and 46, respectively. New material was made into a composite membrane with silicone rubber for blocking up leaks and defects on the surface of its nonsymmetrical membrane, As a result of the test, permeability of the composite membrane was J(O2) = 7.2 x 10(-6) cm(3) (STP) cm(-2) S-1 cm(-1) Hg and J(N2) = 0.99 x 10(-6) cm(3) (STP) cm(-2) S-1 cm(-1) Hg, whereas the alpha(O2/N2) was Still higher than 7. These showed that PPESKs had a bright prospect as the potential membrane material for high-temperature gas separation. (C) 1999 John Wiley & Sons, Inc.
