以离子液体氯代1-烯丙基-3-甲基咪唑([AMIM]Cl)为溶剂来纺制纤维素中空纤维膜,考察了气隙长度与芯液浓度对中空纤维膜结构与性能的影响.采用扫描电子显微镜(SEM)对膜内、外表面形态及支撑层结构进行了观察,测试了中空纤维膜的水通量、截留率等渗透性能以及最大拉伸强度、断裂伸长率、杨氏模量等力学性能.结果表明:随着气隙长度与芯液浓度的增加,中空纤维膜外表面与支撑层孔洞结构变小,内表面结构变得更加规整,膜孔隙率与水通量下降,最大拉伸强度、断裂伸长率、杨氏模量等力学性能则逐渐变大;与芯液浓度相比,气隙长度对中空纤维膜性能的影响较为显著.
参考文献
| [1] | Drioli D;Giorno L.Membrane operations:Innovative Separations and Transformations[M].Germany:WILEY-VCH Verlag GmbH &.Co.KGaA,2009:23-25. |
| [2] | 杨鹏飞.纤维素在膜科学中的研究进展[J].河北化工,2009(04):9-12. |
| [3] | Ehsan Saljoughi;Toraj Mohammadi .Cellulose acetate (CA)/polyvinylpyrrolidone (PVP) blend asymmetric membranes: Preparation, morphology and performance[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2009(2):850-854. |
| [4] | Pekny MR.;Greenberg AR.;Khare V.;Zartman J.;Krantz WB.;Todd P. .Macrovoid pore formation in dry-east cellulose acetate membranes: buoyancy studies[J].Journal of Membrane Science,2002(1/2):11-21. |
| [5] | 李红剑,李雄岩,贺晓泉,李雪梅,曹义鸣,袁权.凝固条件对α-纤维素中空纤维膜结构和性能的影响[J].高分子学报,2007(03):250-254. |
| [6] | Chakrabarty B;Ghoshal AK;Purkait MK .Effect of molecular weight of PEG on membrane morphology and transport properties[J].Journal of Membrane Science,2008(1/2):209-221. |
| [7] | Shuai Zhang .Direct Preparation of a Novel Membrane from Unsubstituted Cellulose in NaOH Complex Solution[J].Iranian polymer journal,2009(10):767-776. |
| [8] | Toraj Mohammadi;Ehsan Saljoughi .Effect of production conditions on morphology and permeability of asymmetric cellulose acetate membranes[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2009(1/3):1-7. |
| [9] | 张耀鹏,邵惠丽,沈新元,胡学超.NMMO法纤维素膜的结构与性能[J].膜科学与技术,2002(04):13-20,25. |
| [10] | Kubisa P.Ionic Liquids as Solvents for Polymerization Processes-Progress and Challenges[J].Progress in Polymer Science,2008 |
| [11] | 程博闻;郑伟;臧洪俊 .离子液体法制备纤维素中空纤维膜[P].中国:CN101234297A,2008-08-06. |
| [12] | Zhang H;Wu J;Zhang J;He JS .1-Allyl-3-methylimidazolium chloride room temperature ionic liquid: A new and powerful nonderivatizing solvent for cellulose[J].Macromolecules,2005(20):8272-8277. |
| [13] | Diego A.Fort;Richard C.Remsing;Richard P.Swatloski .Can ionic liquids dissolve wood?Processing and analysis of lignocellulosic materials with 1-n-butyl-3-methylimidazolium chloride[J].Green chemistry,2007(1):63-69. |
| [14] | 吕阳成,吴影新.凝固浴组成对NMMO法纤维素膜形貌的影响[J].高校化学工程学报,2007(03):398-403. |
| [15] | Chou WL;Yu DG;Yang MC .Influence of coagulant temperature and on-line drawing on the mechanical properties and permeation performance of cellulose acetate hollow fibers[J].Journal of Polymer Research,2005(3):219-229. |
| [16] | Kim JH.;Lee KH. .Effect of PEG additive on membrane formation by phase inversion[J].Journal of Membrane Science,1998(2):153-163. |
| [17] | Chakrabarty B;Ghoshal AK;Purkait MK .Effect of molecular weight of PEG on membrane morphology and transport properties[J].Journal of Membrane Science,2008(1/2):209-221. |
| [18] | Saljoughi E;Sadrzadeh M;Mohammad T .Effect of preparation variables on morphology and pure water permeation flux through asymmetric cellulose acetate membranes[J].Journal of Membrane Science,2009,326:627-634. |
| [19] | Khayet M. .The effects of air gap length on the internal and external morphology of hollow fiber membranes[J].Chemical Engineering Science,2003(14):3091-3104. |
| [20] | Mckelvey SA.;Koros WJ.;Clausi DT. .A GUIDE TO ESTABLISHING HOLLOW FIBER MACROSCOPIC PROPERTIES FOR MEMBRANE APPLICATIONS[J].Journal of Membrane Science,1997(2):223-232. |
| [21] | Tai-Horng Young;Leo-Wang Chen .Pore formation mechanism of membranes from phase inversion process[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,1995(3):233-247. |
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