非对称复合膜支撑层阻力对水蒸气渗透影响的研究

1.中国科学院大连化学物理研究所,大连,116023

2.中国科学院大连化学物理研究所,大连,116023

3.中国科学院大连化学物理研究所,大连,116023

4.中国科学院大连化学物理研究所,大连,116023

The influence of the support layer on water vapor permeation in asymmetric composite membranes

利用阻力模型,采用聚砜/硅橡胶非对称复合膜体系比较了支撑层阻力对氮气、氢气和水蒸气渗透性能的影响,发现支撑层阻力的存在大大降低了水蒸气的渗透速率,某些情况下支撑层阻力占总阻力的90%以上.同时,讨论了支撑层孔隙率、孔径、致密层厚度等膜结构参数对支撑层阻力及膜法脱湿过程的影响.

[1]	Alexander S S .Polymer for gas separations:The next decade[J].Journal of Membrane Science,1994,94:1-65.
[2]	Pesek S C;Koros W J .Aqueous quenched asymmetric polysulfone hollow fibers prepared by dry/wet phase separation[J].Journal of Membrane Science,1994,88:1-19.
[3]	Schult K A;Paul D R .Water sorption and transport in a series of polysulfones[J].Journal of Polymer Science Part B:Polymer Physics,1996,34:2805-2817.
[4]	J.S. Cha;R. Li;K.K. Sirkar .Removal of water vapor and VOCs from nitrogen in a hydrophilic hollow fiber gel membrane permeator[J].Journal of Membrane Science,1996(1):139-153.
[5]	Henis J M S;Tripodi M K .Composite hollow fiber membranes for gas separation:The resistance model approach[J].Journal of Membrane Science,1981,8:233-246.
[6]	Carman P C.Flow of gases through porous media[M].London:Butterworth Publiations,1956
[7]	Clausi Dominic T.;Koros William J.;McKelvey Scott A. .Characterization of substructure resistance in asymmetric gas separation membranes[J].Journal of Membrane Science,1999(1):51-64.
[8]	Beuscher U.;Gooding CH. .CHARACTERIZATION OF THE POROUS SUPPORT LAYER OF COMPOSITE GAS PERMEATION MEMBRANES[J].Journal of Membrane Science,1997(2):213-227.
[9]	Beuscher U;Gooding C H .The influence of the porous support layer of composite membranes on the separation of binary gas mixtures[J].Journal of Membrane Science,1999,152:99-116.
[10]	陆文军,刘丽,王海.非对称膜及其复合膜结构参数的确定[J].高分子材料科学与工程,1995(01):7-12.

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