熔纺-拉伸聚丙烯中空纤维膜制备工艺及孔结构表征综述
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摘要
详细综述了熔纺-拉伸法(MS-S)制备聚丙烯中空纤维膜(PPHFM)过程中,影响膜结构与性能的纺丝、热处理及拉伸工艺因素,并对最佳制膜工艺参数进行了总结。此外,由于PPHFM孔结构决定了膜性能,但MS-S法制备的PPHFM膜孔结构复杂,难以表征,加之聚合物膜结构的表征方法多样且无明确的选择标准,因此着重分析了各种表征孔结构方法的利弊。最后,对膜结构的调控及有效表征进行了展望。
The optimal process parameters and effects of melt spinning, annealing and stretching on the structure and performance of polypropylene hollow fiber membrane(PPHFM) prepared by melt spinning-stretching method(MS-S) were reviewed in detail. The performance of PPHFM is decided by the structure of membrane. However, the PPHFM prepared by MS-S has an irregular pore structure, it is difficult to effectively characterize the pore structure of membrane. Meanwhile, structure characterization methods of polymer membrane are diversity and have no clear selection criteria. So the advantages and disadvantages of various characterization methods of pore structure are emphatically analyzed. Finally, the regulation and characterization of membrane structure were proposed.
The optimal process parameters and effects of melt spinning, annealing and stretching on the structure and performance of polypropylene hollow fiber membrane(PPHFM) prepared by melt spinning-stretching method(MS-S) were reviewed in detail. The performance of PPHFM is decided by the structure of membrane. However, the PPHFM prepared by MS-S has an irregular pore structure, it is difficult to effectively characterize the pore structure of membrane. Meanwhile, structure characterization methods of polymer membrane are diversity and have no clear selection criteria. So the advantages and disadvantages of various characterization methods of pore structure are emphatically analyzed. Finally, the regulation and characterization of membrane structure were proposed.
引文
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[27]Kim B T,Song K,Kim S S.Effects of nucleating agents on preparation of polypropylene hollow ber membranes by melt spinning process[J].Macromole Res,2002,10(2):127-134.
[28]Zhu Y L,Zhao Y S,Fu Q.Toward uniform pore-size distribution and high porosity of isotactic polypropylene microporous membrane by adding a small amount of ultra ne full-vulcanized powder rubber[J].Polymer,.2016,103:405-414.
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[31]赵学辉,吕晓龙.中空纤维膜孔径及其分布的测定[J].水处理技术,2007,33(7):14-17.
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[33]Yao F,Fu G D,Zhao J P,et al.Antibacterial effect of surfacefunctionalized polypropylene hollow fiber membrane from surface-initiated atom transfer radical polymerization[J].JMembr Sci,2008,319(1-2):149-157.
[34]Chen X D,Xu R J,Xie J Y,et al.The study of roomtemperature stretching of annealed polypropylene cast film with row-nucleated crystalline structure[J].Polymer,2016,94:31-42.
[2]倪阳,汪茫,陈红征.聚丙烯中空纤维膜在海水中的老化现象[J].材料科学与工程学报,2011,29(3):351-354.
[3]Lv Y X,Yu X H,Tu S T,et al.Experimental studies on simultaneous removal of CO2 and SO2 in a polypropylene hollow fiber membrane contactor[J].Appl Ener,2012,97:283-288.
[4]段亚峰,潘峰.膜式氧合器用聚丙烯中空纤维膜超微结构[J].纺织学报,2005,26(3):29-31.
[5]Toshiji I,Kazuaki T,Kazuhiro S,et al.Hollow ber membrane and method for manufacture thereof:US,4708800[P].1987-11-24.
[6]Mafrosovich M N,Andreev V G,Kostrov Y A,et al.Preparation of hollow porous polypropylene fibers having a high gas permeability[J].Fiber Chem,1984,15:245-248.
[7]Sadeghi F,Ajji A,Carreau P J.Analysis of microporous membranes obtained from polypropylene films by stretching[J].J Membr Sci,2007,292(1-2):62-71.
[8]Li N N,Xiao C F,Mei S,et al.The multi-pore-structure of polymer-silicon hollow fiber membranes fabricated via thermally induced phase separation combining with stretching[J].Desalination,2011,274:284-291.
[9]Kim J J,Jang T S,Kwon Y D,et al.Structural-study of microporous polypropylene hollow ber membranes made by the melt-spinning and cold-stretching method[J].J Membr Sci,1994,93(3):209-215.
[10]Chu F,Yamaoka T,Ide H,et al.Microvoid formation process during the plastic deformation ofβ-form polypropylene[J].Polymer,1994,35(16):3 442-3 448.
[11]Wu T,Xiang M,Cao Y,et al.In uence of lamellar structure on double yield behavior and pore size distribution inβnucleated polypropylene stretched membranes[J].RSC Adv,2014,4:43 012-43 023.
[12]Kim J J,Hwang J R,Kim U Y,et al.Operation parameters of melt spinning of polypropylene hollow ber membranes[J].JMembr Sci,1995,108:25-36.
[13]Park I K,Noether H D.Crystalline“hard”elastic materials[J].Colloid&Polym Sci,1975,253(10):824-839.
[14]Liu D,Kang J,Xiang M,et al.Effect of annealing on phase structure and mechanical behaviors of polypropylene hard elastic lms[J].J Polym Res,2013,20:126-136.
[15]Ferrer-Balas D,Maspoch M L,Martinez A B,et al.In uence of annealing on the microstructural,tensile and fracture properties of polypropylene films[J].Polymer,2001,42(4):1 697-1 705.
[16]Saffar A,Ajji A,Carreau P J,et al.The impact of new crystalline lamellae formation during annealing on the properties of polypropylene based lms and membranes[J].Polymer,2014,55(14):3 156-3 167.
[17]Ding Z,Bao R,Zhao B,et al.Effects of annealing on structure and deformation mechanism of isotactic polypropylene film with row-nucleated lamellar structure[J].J Appl Polym Sci,2013,130:1 659-1 666.
[18]Yu T H.Processing and structure-property behavior of microporous polyethylene from resin to nal lm[D].Virginia:Virginia Polytechnic Institute and State University,1996.
[19]Shao H J,Wei F J,Wu B,et al.Effects of annealing stress eld on the structure and properties of polypropylene hollow ber membranes made by stretching[J].RSC Adv,2016,6:4 271-4 279.
[20]Saffar A,Carreau P J,Ajji A,et al.Influence of stretching on the performance of polypropylene-based microporous membranes[J].Ind Eng Chem Res,2014,53(36):14 014-14 021.
[21]Tabatabaei S H,Carreau P J,Ajji A.Microporous membranes obtained from polypropylene blend films by stretching[J].JMembr Sci,2008,325(2):772-782.
[22]Lei C H,Wu S Q,Xu R J,et al.Formation of stable crystalline connecting bridges during the fabrication of polypropylene microporous membrane[J].Polym Bull,2013,70(4):1 353-1 366.
[23]Wu S Q,Lei C H,Cai Q,et al.Study of structure and properties of polypropylene microporous membrane by hot stretching[J].Polym Bull,2014,71(9):2 205-2 217.
[24]韦福建.熔纺-拉伸法制备高性能聚丙烯中空纤维膜的研究[D].贵阳:贵州大学,2016.
[25]Offord G T,Armstrong S R,Freeman B D,et al.Porosity enhancement inβnucleated isotactic polypropylene stretched lms by thermal annealing[J].Polymer,2013,54(10):2 796-2 807.
[26]Lei C H,Wu S Q,Cai Q,et al.Influence of heat-setting temperature on the properties of a stretched polypropylene microporous membrane[J].Polym Int,2014,63(3):584-588.
[27]Kim B T,Song K,Kim S S.Effects of nucleating agents on preparation of polypropylene hollow ber membranes by melt spinning process[J].Macromole Res,2002,10(2):127-134.
[28]Zhu Y L,Zhao Y S,Fu Q.Toward uniform pore-size distribution and high porosity of isotactic polypropylene microporous membrane by adding a small amount of ultra ne full-vulcanized powder rubber[J].Polymer,.2016,103:405-414.
[29]Shao P,Huang R Y M,Feng X,et al.Gas-liquid displacement method for estimating membrane pore-size distributions[J].AIChE Journal,2004,50(3):557-565.
[30]Li M S,Zhao Z P,Wang M X,et al.Controllable modi cation of polymer membranes by LDDLT plasma ow:Antibacterial layer onto PE hollow ber membrane module[J].Chem Eng J,2015,265:16-26.
[31]赵学辉,吕晓龙.中空纤维膜孔径及其分布的测定[J].水处理技术,2007,33(7):14-17.
[32]陈燚.聚偏氟乙烯中空纤维多孔膜孔径及孔径分布测试方法的研究[D].天津:天津工业大学,2003.
[33]Yao F,Fu G D,Zhao J P,et al.Antibacterial effect of surfacefunctionalized polypropylene hollow fiber membrane from surface-initiated atom transfer radical polymerization[J].JMembr Sci,2008,319(1-2):149-157.
[34]Chen X D,Xu R J,Xie J Y,et al.The study of roomtemperature stretching of annealed polypropylene cast film with row-nucleated crystalline structure[J].Polymer,2016,94:31-42.
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