| Preparation of polypropylene / polyvinyl chloride co-blending hydrophobic microporous membrane via thermally induced phase separation for vacuum distillation |
| Authors： HAN Huaiyuan1,2, ZHANG Lei1,2, FENG Chunlei1,2, XIANG Jun1,2, CHENG Penggao1,2, TANG Na1,2,* |
| Units： 1. College of Marine Science and Engineering，Tianjin University of Science and Technology ，Tianjin 300457；2.Tianjin Key Laboratory of Marine Resources and Chemistry，Tianjin 300457 |
| KeyWords： thermally induced phase separation (TIPS) ; polypropylene (PP); polyvinyl chloride (PVC); co-blending membrane; membrane distillation(MD) |
| ClassificationCode：TQ028.8 |
| year,volume(issue):pagination： 2016,36(2):48-54 |
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Abstract： |
| Isotatic polypropylene/polyvinyl chloride co-blending hydrophobic microporous flat-sheet membranes were prepared via TIPS. The morphology of iPP/PVC co-blending hydrophobic membranes were discussed with different iPP/PVC mass ratio and different polymer concentration. Meanwhile, some of the properties of the iPP/PVC co-blending hydrophobic membranes were measured, such as mean pore diameter, porosity, and contact angle. The result showed that the morphology of iPP/PVC co-blending hydrophobic membranes was sandwich-structure comprised of plate-like structure and branch-like structure. The mean pore diameter and porosity of co-blending membranes was increased with the addition of iPP mass ratio. At last, the vacuum membrane distillation performances of the iPP/PVC co-blending hydrophobic membranes were investigated using 0.5 mol•L-1 NaCl solution as feed solution. Under the condition of 0.095MPa vacuum degree and 30 L•h-1 feed flow, the permeate flux of the co-blending membranes reached 13.11 kg•m-2•h-1 with >99.99% NaCl rejection at 85 °C feed temperature. |
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Funds： |
| 国家自然基金（21376178）；天津市科委科技支撑重大专项（12ZCDZSF06900-3）；天津市科委面上重点项目（12JCZDJC30000）；天津市海洋经济创新发展区域示范项目（cxsf2014-26）；教育部创新团队项目（编号：[2013]373）；天津市创新团队项目（编号：TD12-5004）；天津科技大学大学生创新创业训练计划（201410057075） |
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AuthorIntro： |
| 第一作者简介：韩怀远（1986-），男，河南郑州人，博士生。主要研究方向：热致相分离制膜及膜分离技术。（alexhanhuaiyuan@163.com） 通讯作者：E-mail:（tjtangna@tust.edu.cn） |
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Reference： |
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[1] Lawson，K．W．，Lloyd，D．R．．Membrane distillation[J]．Journal of Membrane Science，1997，124：1~25． [2] Alkhudhiri A.．，Darwish N．．Membrane distillation: A comprehensive review [J]．Desalination，2012，287：2~18． [3] El-Bourawi M．S．，Ding Z．，Ma R．，et al．A framework for better understanding membrane distillation separation process[J]．Journal of Membrane Science，2006，285：4~29． [4] Sun A．C．， Kosar W．， Zhang Y．，et al．acuum membrane distillation for desalination of water using hollow ?ber membranes．Journal of Membrane Science， 2014，455：131~142． [5] Tang N．，Jia Q．，Zhang H．J．，et al．Preparation and morphological characterization of narrow pore size distributed polypropylene hydrophobic membranes for vacuum membrane distillation via thermally induced phase separation[J]．Desalination. 2010，256：27~36． [6] H．Mahmud，A．Kumar，R．M．Narbaitz，T．Matsuura．Mass transport in the membrane air-stripping process using microporous polypropylene hollow fibers：effect of toluene in aqueous feed[J]．J．Membr．Sci．，2002，209(1)：207~219． [7] Flory P．J．． Principles of polymer chemistry[M]．Cornell University Press，New York，1953． [8] Deniz S．．Effect of nonsolvent type on the surface morphology and preparation of microporous membranes from blends of poly(phenylene oxide) and poly(p-phenylene oxide-sulfone) or polysulfone[J]．Desalination，2006，200：52~54． [9] Saljoughi E．，Mohammadi T．．Cellulose acetate (CA)/polyvinylpyrrolidone (PVP) blend asymmetric membranes: Preparation, morphology and performance[J]．Desalination，2009，249：850~854． [10] Teoh M．．Chung T．．Membrane distillation with hydrophobic macrovoid-free PVDF-PTFE hollow fibre membranes[J]．Separation and Purification Technology，2009，66：229~236． [11] Matsuyama H．，Okafuji H．．Membrane formation via thermally induced phase separation in Polypropylene/Polybutene/Diluent system[J]．Journal of Applied Science，2002，84：1701~1708． [12] Yave W．，Quidada R．，Lloyd D．R.．，et.a1．Propylene/1-hexene copolymer as a tailor-made poly(propylene) for membrane preparation via the thermally induced phase separation (TIPS) process Macromol[J]．Material Engineering，2006，291：155~161． [13] J．Brandrup，E．H．Immergut，E．A．Grulke．Polymer Handbook[M]．4th Edition．USA：Wiley-Interscience Publicaiton，1999：1501~1508． [14] Biplab K．，Deka T．K．， Maji．Effect of coupling agent and nanoclay on properties of HDPE, LDPE, PP, PVC blend and Phargamites karka nanocomposite[J]．Composites Science and Technology，2010，70：1755~1761． [15] Diao J．，Zhang J．，Qi Z．，et al．Mechanical properties and Morphology of blends of hyperbranched polymer with PP/PVC [polypropylene and poly (vinyl chloride)][J]．Iranian Polymer Journa，2006，15：93~101． [16] 唐娜，刘家祺，马敬环，等．热致相分离聚丙烯平板微孔膜的制备[J]．膜科学与技术，2005，25：38~41． [17] 唐娜，马敬环，王嘉宁，等．热致相分离制膜条件对聚丙烯平板微孔膜结构的影响[J]．膜科学与技术，2007，27：21~25． [18] Simone S．，Figoli A．，Criscuoli A．，et.al．Preparation of hollow fibre membranes from PVDF/PVP blends and their application in VMD[J]．Journal of Membrane Science，2010，364：219~232． [19] Li X．，Wang T．，Lu Z．．Morphology changes of polyvinylidene fluoride membrane under different phase separation mechanisms[J]．Journal of Membrane Science，2008，320，477~482． [20] Bakangura E．，Ge L．，Muhammad M．，et al．Sandwich structure SPPO/BPPO proton exchange membranes for fuel cells: Morphology–electrochemical properties relationship[J]．Journal of Membrane Science，2015，475：30~38． [21] Zhang J．，Chen S．，Xie X．，et al．Porous poly(vinylidene fluoride-co-hexafluoropropylene) polymer membrane with sandwich-like architecture for highly safe lithium ion batteries[J]．Journal of Membrane Science，2014，472：133~140． [22] H1ildebrand H．，Scott R．L．．The Solubility of Nonelectrolytes，3 rd ed[M]．Reinhold，New York，1950． [23] 刘立强．热致相分离法iPP中空纤维微孔膜的制备研究[D]．天津大学． [24] 雷彩红．氯化聚丙烯对PP/PVC共混物性能的影响[J]．塑料科技，2007，35：50~53． [25] Matsuyama H．，Yuasa M．，Kitamura Y．，et al．Structure control of anisotropic and asymmetric polypropylene membrane prepared by thermally induced phase separation[J]．Journal of Membrane Science，2000，179：91~100． [26] Lin Y．K．， Chen G．，Yang J．，et al．Formation of isotactic polypropylene membranes with bicontinuous structure and good strength via thermally induced phase separation method[J]．Desalination，2009，236：8~15． [27] Matsuyama H．，Maki T．，Teramoto M．，Asano K．．Effect of polypropylene molecular weight on porous membrane formation by thermally induced phase separation[J]．Journal of Membrane Science，2002， 204：323~328． [28] Patrick L．，Lloyd D．R．．Deterministic model for matrix solidification in liquid–liquid thermally induced phase separation[J]．Journal of Membrane Science， 2007，306：125~133． [29] Song Z．，Xing M．，Zhang J．，et al．Determination of phase diagram of a ternary PVDF/c-BL/DOP system in TIPS process and its application in preparing hollow ?ber membranes for membrane distillation[J]．Separation and Puri?cation Technology，2012，90：221~230． |
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