选用Pebax1657和SAPO-34为膜材料,分别采用醋酸和1-丁醇为溶剂,通过流延法制备Pebax/SAPO-34混合基质膜(MMMs).研究发现,溶剂能显著地影响膜的结构形态以及渗透性能.纯Pebax膜的气体渗透系数受溶剂的影响较大,而选择性受溶剂影响不大.对于分子筛含量较高(质量分数33％)的MMMs,以1-丁醇为溶剂时,分子筛的分散均匀程度更高,但就材料的成膜性而言,醋酸为溶剂时更好.MMMs中气体渗透系数的变化是结晶度、扩散曲度、链段运动能力和膜形态等因素的共同作用的结果.醋酸为溶剂时,由于相分离的发生,气体的渗透系数出现突跃,最大提高到纯Pebax膜的3倍.1-丁醇为溶剂时,除H2外,气体渗透系数先出现一定程度的提高,而后由于受到链段僵化以及扩散曲度的影响而降低.
参考文献
| [1] | S.Sridhar;T.M.Aminabhavi;S.J.Mayor .Permeation of Carbon Dioxide and Methane Gases through Novel Silver-Incorporated Thin Film Composite Pebax Membranes[J].Industrial & Engineering Chemistry Research,2007(24):8144-8151. |
| [2] | Ahmad A L;Jawad Z A;Low S C et al.A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2 separation[J].Journal of Membrane Science,2014,451(0):55-66. |
| [3] | Lin HQ;Freeman BD .Materials selection guidelines for membranes that remove CO2 from gas mixtures[J].Journal of Molecular Structure,2005(1/3):57-74. |
| [4] | Liang L;Gan Q;Nancarrow P .Composite ionic liquid and polymer membranes for gas separation at elevated temperatures[J].Journal of Membrane Science,2014,450:407-417. |
| [5] | 赵红永,曹义鸣,康国栋,丁晓莉,袁权.聚氧化乙烯气体分离膜的发展[J].膜科学与技术,2011(03):18-24. |
| [6] | H. Lin;B.D. Freeman .Gas solubility, diffusivity and permeability in poly(ethylene oxide)[J].Journal of Membrane Science,2004(1):105-117. |
| [7] | Xiaoling Ren;Jizhong Ren;Maicun Deng.Poly(amide-6-b-ethylene oxide) membranes for sour gas separation[J].Separation and Purification Technology,2012:1-8. |
| [8] | Bondar VI.;Pinnau I.;Freeman BD. .Gas transport properties of poly(ether-b-amide) segmented block copolymers[J].Journal of Polymer Science, Part B. Polymer Physics,2000(15):2051-2062. |
| [9] | BONDAR V.I.;FREEMAN B.D.;PINNAU I. .Gas Sorption and Characterization of Poly (ether-b-amide) Segmented Block Copolymers[J].Journal of Polymer Science, Part A. Polymer Chemistry,1999(17):2463-2475. |
| [10] | Jae Hoon Kim;Seong Yong Ha;Young Moo Lee .Gas permeation of poly(amide-6-b-ethylene oxide_ copolymer[J].Journal of Membrane Science,2001(2):179-193. |
| [11] | 冯世超,任吉中,任晓灵,李晖,花开胜,邓麦村.聚醚共聚酰胺/聚乙二醇共混膜的制备及其气体渗透性能的研究[J].膜科学与技术,2012(05):27-33. |
| [12] | 任晓灵,任吉中,邓麦村.聚醚共聚酰胺多层复合气体分离膜的制备及其分离性能[J].膜科学与技术,2012(02):30-35. |
| [13] | Feng, Shichao;Ren, Jizhong;Li, Zhansheng;Li, Hui;Hua, Kaisheng;Li, Xinxue;Deng, Maicun.Poly(amide-12-b-ethylene oxide)/glycerol triacetate blend membranes for CO2 separation[J].International Journal of Greenhouse Gas Control,2013:41-48. |
| [14] | Freeman Benny D. .Basis of permeability/selectivity tradeoff relations in polymeric gas separation membranes[J].Macromolecules,1999(2):375-380. |
| [15] | Amnuaypanich, S;Patthana, J;Phinyocheep, P .Mixed matrix membranes prepared from natural rubber/poly(vinyl alcohol) semi-interpenetrating polymer network (NR/PVA semi-IPN) incorporating with zeolite 4A for the pervaporation dehydration of water-ethanol mixtures[J].Chemical Engineering Science,2009(23):4908-4918. |
| [16] | Tai-Shung Chung;Lan Ying Jiang;Yi Li .Mixed matrix membranes (MMMs) comprising organic polymers with dispersed inorganic fillers for gas separation[J].Progress in Polymer Science,2007(4):483-507. |
| [17] | Li G;Yang J H;Wang J Q et al.Thin carbon/SAPO-34 microporous composite membranes for gas separation[J].Journal of Membrane Science,2011,374(1-2):83-92. |
| [18] | Shiguang Li;John L.Falconer;Richard D.Noble .SAPO-34 membranes for CO2/CH4 separations:Effect of Si/Al ratio[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2008(2/3):310-317. |
| [19] | Karatay E;Kalipcilar H;Yilmaz L .Preparation and performance assessment of binary and ternary PESSAPO 34-HMA based gas separation membranes[J].Journal of Membrane Science,2010,364(1-2):75-81. |
| [20] | Jha P;Way J D .Carbon dioxide selective mixed-matrix membranes formulation and characterization using rubbery substituted polyphosphazene[J].Journal of Membrane Science,2008,324(1-2):151-161. |
| [21] | Zoppi RA.;Yoshida IVP.;Nunes SP.;Decastro CR. .HYBRIDS OF SIO2 AND POLY(AMIDE 6-B-ETHYLENE OXIDE)[J].Polymer: The International Journal for the Science and Technology of Polymers,1997(23):5705-5712. |
| [22] | Wilfredo Yave;Anja Car;Sergio S. Funari;Suzana P. Nunes;Klaus-Viktor Peinemann .CO2-Philic Polymer Membrane with Extremely High Separation Performance[J].Macromolecules,2010(1):326-333. |
| [23] | MERKEL T.C.;BONDAR V.I. .Gas Sorption, Diffusion, and Permeation in Poly(dimethylsiloxane)[J].Journal of Polymer Science, Part B. Polymer Physics,2000(3):415-434. |
| [24] | Lin H;Van Wagner E;Freeman BD;Toy LG;Gupta RP .Plasticization-enhanced hydrogen purification using polymeric membranes.[J].Science,2006(5761):639-642. |
| [25] | Jae Hoon Kim;Young Moo Lee .Gas permeation properties of poly(amide-6-b-ethylene oxide)-silica hybrid membranes[J].Journal of Membrane Science,2001(2):209-225. |
| [26] | Moore TT;Koros WJ .Non-ideal effects in organic-inorganic materials for gas separation membranes[J].Journal of Molecular Structure,2005(1/3):87-98. |
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