| GAS SORPTION AND TRANSPORT IN POLY (PHENYLENE OXIDE)(PPO)AND ARYL-BROMINATED PPO MEMBRANES |
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| 引用本文： | 贾连达,F. R. SHEU,R.T.CHERN,H.B.HOPFENBERG. GAS SORPTION AND TRANSPORT IN POLY (PHENYLENE OXIDE)(PPO)AND ARYL-BROMINATED PPO MEMBRANES[J]. 高分子科学, 1989, 0(4): 306-314 |
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| 作者姓名： | 贾连达 F. R. SHEU R.T.CHERN H.B.HOPFENBERG |
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| 作者单位： | Changchun Institute of Applide Chemistry，Academia Sinica，Changchun，PRC，Department of Chemical Engineering，North Carolina State University，Raleigh，NC 27695，USA，Department of Chemical Engineering，North Carolina State University，Raleigh，NC 27695，USA，Department of Chemical Engineering，North Carolina State University，Raleigh，NC 27695，USA |
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| 摘 要： | The apparent solubility (S), concentration-average diffusivity (D), and permeability (P), for C0_2, CH_4 and N_2 through PPO and aryl-brominated PPO at 35℃for pressure ranging from 1 to 26 atm are reported. It is found that P, D, and S of the membranes to all the three gases vary with the extent of bromination. S increases with the increase of the percent of bromine in each case, but D to CO_2 increases remarkably only at higher degree of brominafion, and therefore, P to CO_2 is increased by more than 100% over a wide range ofpressure in the case. The solubility data are well described by the dual mode sorption model. It is found that the gas molecules sorbed by the Langmuir mode are relatively more immobilized and the contribution of the nonequilibrinm character of the polymer to gas permeation increases obviously for CO_2 and is hardly changed for CH_4 with increasing bromine content. These observations are interpreted in terms of changes in specific free volume (SFV)and the cohesive energy density (CED) of the polymers.
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| 收稿时间： | 1988-04-18 |
GAS SORPTION AND TRANSPORT IN POLY (PHENYLENE OXIDE)(PPO)AND ARYL-BROMINATED PPO MEMBRANES |
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| JIA Lianda,F. R. SHEU,R.T.CHERN,H.B.HOPFENBERG. GAS SORPTION AND TRANSPORT IN POLY (PHENYLENE OXIDE)(PPO)AND ARYL-BROMINATED PPO MEMBRANES[J]. Chinese Journal of Polymer Science, 1989, 0(4): 306-314 |
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| Authors: | JIA Lianda F. R. SHEU R.T.CHERN H.B.HOPFENBERG |
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| Affiliation: | Changchun Institute of Applide Chemistry; Academia Sinica; Changchun; Department of Chemical Engineering; North Carolina State University; Raleigh; NC 27695 |
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| Abstract: | The apparent solubility (S), concentration-average diffusivity (D), and permeability (P), for C02, CH4 and N2 through PPO and aryl-brominated PPO at 35℃ for pressure ranging from 1 to 26 atm are reported. It is found that P, D, and S of the membranes to all the three gases vary with the extent of bromination. S increases with the increase of the percent of bromine in each case, but D to CO2 increases remarkably only at higher degree of brominafion, and therefore, P to CO2 is increased by more than 100% over a wide range of pressure in the case.The solubility data are well described by the dual mode sorption model.It is found that the gas molecules sorbed by the Langmuir mode are relatively more immobilized and the contribution of the nonequilibrium character of the polymer to gas permeation increases obviously for CO2and is hardly changed for CH4 with increasing bromine content.These observetions are interpreted in terms of changes in specific free volume(SFV) and the cohesive energy density (EMD) of the polymers. |
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| Keywords: | Poly (Phenylene Oxide) (PPO) Bromination Membrane Permeability. |
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