通过羟氨缩合法合成了一系列不同比例“软-硬”段的PDMS-b-PPO共聚物,利用1H-NMR测定组分比,采用溶剂挥发法将其制备成膜并用于乙醇/水的渗透汽化分离,考察了PDMS-b-PPO共聚物的组分比对小分子在膜中溶解扩散性及膜微观结构的影响.利用接触角法测定了PDMS-b-PPO膜的溶解度参数,采用比重法计算了乙醇和水分子在膜中的相互作用参数及扩散系数,并通过AFM和EDS等手段对膜的微观结构进行表征.结果表明,PDMS-b-PPO膜具有微相分离的特征结构,随着膜中PDMS浓度的增加,膜的微相分离结构更加明显,乙醇在膜中的溶解和扩散能力明显增强.
参考文献
| [1] | 时钧;袁权;高从堦.膜技术手册[M].北京:化学工业出版社,2001:576-577. |
| [2] | Anil K Pabby;Syed S H Rizvi;Ana Maria Sastre.Handbook of Membrane Separations[M].US:Taylor & Francis Group |
| [3] | 刘雪春,陈翠仙,李继定.渗透物分子在渗透蒸发膜中的传质模型[J].膜科学与技术,2009(05):94-101. |
| [4] | 彭福兵,姜忠义.二元水溶液在渗透蒸发膜中的传质模型[J].化学工程,2005(01):60-64. |
| [5] | 由涛,陈龙祥,张庆文,洪厚胜.聚二甲基硅氧烷的改性技术及其渗透汽化性能的影响因素[J].合成橡胶工业,2009(05):435-439. |
| [6] | 由涛,陈龙祥,张庆文,张继民,洪厚胜.聚二甲基硅氧烷膜在渗透汽化技术中的研究进展[J].化工新型材料,2009(09):1-4. |
| [7] | Ishihara K;Matsui K .Pervaporation of ethanol-water mixture through composite membranes composed of styrene-fluoroalkyl acrylate graft copolymers and crosslinked polydimethylsiloxane membrane[J].Journal of Applied Polymer Science,1987,34:437-440. |
| [8] | Cheng-Liang Chang;Ming-Shih Chang .Preparation of multi-layer silicone/PVDF composite membranes for pervaporation of ethanol aqueous solutions[J].Journal of Membrane Science,2004(1/2):117-122. |
| [9] | Miyata T.;Okuno H.;Uragami T.;Higuchi J. .PREPARATION OF POLYDIMETHYLSILOXANE/POLYSTYRENE INTERPENETRATING POLYMER NETWORK MEMBRANES AND PERMEATION OF AQUEOUS ETHANOL SOLUTIONS THROUGH THE MEMBRANES BY PERVAPORATION[J].Journal of Applied Polymer Science,1996(8):1315-1324. |
| [10] | Jiang, Y.;Shi, H.;Cai, M.;Liang, Y.;Li, B.;Zhang, H.;Song, R. .Synthesis and characterization of PS-b-PDMS-b-PS triblock copolymer[J].Journal of Applied Polymer Science,2013(1):247-252. |
| [11] | Nagase Y;Mori S;Matsui K .Chemical modification of poly(substituted-acetylene).(Ⅳ) Pervaporation of organic liquid/water mixture through poly (1-phenyl-1-propyne)/polydimethylsiloxane graft copolymer membrane[J].Journal of Applied Polymer Science,1989,37:1259-1267. |
| [12] | Krea M;Roizard D;Moulai-Mostefa N;Sacco D .New copolyimide membranes with high siloxane content designed to remove polar organics from water by pervaporation[J].Journal of Membrane Science,2004(1):55-64. |
| [13] | Miyata Takashi;Obata Seiji .Annealing Effect of Microphase-Separated Membranes Containing Poly(dimethylsiloxane) on Their Permselectivity for Aqueous Ethanol Solutions[J].Macromolecules,1999(25):8465-8475. |
| [14] | Miyata T.;Uragami T.;Takagi T. .MICROPHASE SEPARATION IN GRAFT COPOLYMER MEMBRANES WITH PENDANT OLIGODIMETHYLSILOXANES AND THEIR PERMSELECTIVITY FOR AQUEOUS ETHANOL SOLUTIONS[J].Macromolecules,1996(24):7787-7794. |
| [15] | 刘威,纪树兰,秦振平,牛洪金,刘吉达.PDMS-b-PPO共聚物的合成及优先透醇性能研究[J].北京工业大学学报,2012(05):778-782,788. |
| [16] | Neel J;Huang R Y M.Pervaporation membrane separation processes[M].Amsterdam:Elsevier,1991 |
| [17] | Flory P J.Priciples of polymer chemistry[M].Cornell Univ Press,New York,1953 |
| [18] | Ji W;Sikdar S;Hwang S T .Sorption,diffusion and permeation of 1,1,1-trichloroethane through absorbent-filled polymeric membranes[J].Journal of Membrane Science,1995,103:243-255. |
| [19] | 纪树兰;刘威;秦振平 .用于渗透汽化膜材料的聚硅氧烷-聚苯醚嵌段物的制备方法[P].中国,C,ZL200910236799,2009-10-30. |
| [20] | 展侠,李继定,黄军其,陈翠仙.渗透气化优先透醇分离膜[J].化学进展,2008(09):1416-1426. |
| [21] | Khulbe KC.;Lamarche G.;Kim HJ.;Matsuura T. .THE MORPHOLOGY CHARACTERISATION AND PERFORMANCE OF DENSE PPO MEMBRANES FOR GAS SEPARATION[J].Journal of Membrane Science,1997(2):211-223. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%