聚乙烯醇膜改性研究进展
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摘要
为解决聚乙烯醇(PVA)直接成膜后易在水中发生溶胀甚至溶解的问题,叙述了通过溶液共混、化学交联等对PVA膜的力学性能、抗水性能进行改性,引入纳米粒子、对底膜进行亲水性预处理以提高复合膜的水通量,以及利用PVA分子链上的羟基进行交联反应以提高复合膜的截留性能的方法。认为选用阴离子表面活性剂可在水中发生解离形成阴离子基团,有效增大基膜表面的亲水性,有助于PVA均匀牢固地附着在基膜上。通过降低功能层的厚度进而减少水通过的阻力,以获得更大的水通量;利用超支化聚酯高度支化的三维结构,与PVA铸膜液共混以提高PVA复合膜分离性能,是非常有潜力的发展方向。
To solve the problems of polyvinyl alcohol(PVA) which is easy to expand and even dissolve in water after film formation directly. The mechanical properties and water resistance of PVA films were modified by solution blending and chemical crosslinking. The hydrophilic pretreatment of the substrate membrane with nanoparticles was carried out to improve the water flux of the composite membrane. The interlinking reaction of the hydroxyl group on the molecular chain of PVA was also used to improve the retention property of the composite membrane. Anion group would be formed by anionic surfactant dissociation in water, which enhanced the hydrophilia of basement membrane surface and contributed to PVA attached to the basement membrane firmly. The water resistance reduced with the decrease of the thickness of functional layer, so as to obtain greater water flux. The 3 d structure of hyperbranched polyester was mixed with PVA casting solution to improve the separation performance of PVA composite membrane, which is a potential development direction.
To solve the problems of polyvinyl alcohol(PVA) which is easy to expand and even dissolve in water after film formation directly. The mechanical properties and water resistance of PVA films were modified by solution blending and chemical crosslinking. The hydrophilic pretreatment of the substrate membrane with nanoparticles was carried out to improve the water flux of the composite membrane. The interlinking reaction of the hydroxyl group on the molecular chain of PVA was also used to improve the retention property of the composite membrane. Anion group would be formed by anionic surfactant dissociation in water, which enhanced the hydrophilia of basement membrane surface and contributed to PVA attached to the basement membrane firmly. The water resistance reduced with the decrease of the thickness of functional layer, so as to obtain greater water flux. The 3 d structure of hyperbranched polyester was mixed with PVA casting solution to improve the separation performance of PVA composite membrane, which is a potential development direction.
引文
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[26]陈红,俞珊,徐静,等.聚乙烯醇/海藻酸钠复合膜的制备及性能研究[J].化工新型材料,2011,39(9):62-73.
[27]KIM E Y,YIM S D,BAE B,et al.Study of a highly durable lowhumidification membrane electrode assembly using crosslinked polyvinyl alcohol for polymer electrolyte membrane fuel cells[J].Journal of Solid State Electrochemistry,2016,20(6):1723-1730.
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[33]KIM Y H.Hyperbranched polymers 10 years after[J].Journal of Polymer Science Part A Polymer Chemistry,2015,36(11):1685-1698.
[34]SAMUELSSON J,SUNDELL P E,JOHANSSON M.Synthesis and polymerization of a radiation curable hyperbranched resin based on epoxy functional fatty acids[J].Progress in Organic Coatings,2004,50(3):193-198.
[35]WEI X Z,ZHU L P,DENG H Y,et al.New type of nanofiltration membrane based on crosslinked hyperbranched polymers[J].Journal of Membrane Science,2008,323(2):278-287.
[36]MAHDAVI H,HOSSEINZADEH M T,SHAHALIZADE T.Effect of hyperbranched polyester and poly(amine ester)on the performance and properties of polyethersulfone membranes[J].Journal of the Iranian Chemical Society,2015,12(8):1-8.
[37]杨萍.超支化聚酯的亲水改性及其对PVA渗透汽化膜分离性能的影响[D].长春:长春工业大学,2015.
[38]陈冰,仉春华,杨凤林,等.聚乙烯醇陶瓷复合膜的制备与性能研究[J].水处理技术,2006,32(10):17-20.
[39]HU Y,GAO C,YAN F,et al.Enhancing the performance of aromatic polyamide reverse osmosis membrane by surface modification via covalent attachment of polyvinyl alcohol(PVA)[J].Journal of Membrane Science,2016,501:209-219.
[40]吴春金,张龙,李磊,等.聚乙烯醇复合超滤膜的研制及其耐污染性能[J].水处理技术,2008,34(4):40-43.
[41]吴宗策,郭玉阳,梁松苗,等.高性能聚醚砜/聚乙烯醇复合超滤膜的研究[J]水处理技术,2016,42(2):51-55.
[42]NAZRI N A M,LAU W J,ISMAIL A F.Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrileg-poly(vinyl alcohol)graft copolymer[J].Korean Journal of Chemical Engineering,2015,32(9):1-11.
[43]汪艳,胡惠敏.聚乙烯醇改性聚丙烯微孔膜的性能[J].武汉工程大学学报,2014,36(5):38-41.
[44]冯宗财,宋秀美,王跃川.聚醚改性超支化聚合物的合成及性能[J].化工新型材料,2014,42(11):79-81.
[2]郝建文,戴晨伟,吴亮.聚乙烯醇膜的交联改性与应用研究进展[J].化工新型材料,2017(1):41-43.
[3]高莹,史相如,刘文林,等.氧化石墨烯/聚乙烯醇复合材料的纳米压痕实验及力学性能[J].复合材料学报,2016,33(1):53-60.
[4]李佳佳.聚乙烯醇复合材料的制备及其性能研究[D].兰州:西北师范大学,2014.
[5]郭韵恬,霍李江.PVA纳米涂布PE抗菌薄膜制备及其包装性能研究[J].功能材料,2015,46(B6):34-37.
[6]陈丽.聚乙烯醇复合膜材料的制备和性能研究[D].合肥:合肥工业大学,2013.
[7]DODDA J M,B魫LSK譭P,CHMELA J,et al.Comparative study of PVA/Si O2and PVA/Si O002/glutaraldehyde(GA)nanocomposite membranes prepared by single-step solution casting method[J].Journal of Materials Science,2015,50(19):6477-6490.
[8]HONG K H.Preparation and properties of polyvinyl alcohol/tannic acid composite film for topical treatment application[J].Fibers&Polymers,2016,17(12):1963-1968.
[9]唐运容,郭蕾,黄良辉,等.乙烯-乙烯醇共聚物增强聚乙烯醇膜的结构与机理分析[J].高分子材料科学与工程,2015,31(10):57-61.
[10]CHEN X,WANG S J,XIAO M,et al.Miscibility,properties and morphology of biodegradable blends of UHMW-PPC/PVA/EVOH[J].Journal of Polymer Research,2011,18(4):715-720.
[11]范文如,毛庆,费国霞,等.改性聚乙烯醇/聚乙二醇共混复合材料的制备与性能[J].高分子材料科学与工程,2014,30(2):115-120.
[12]屈奥运,郝艳玲,张羽.玉米全粉/PVA共混膜的制备及性能[J].包装工程,2018(1):69-73.
[13]唐婷婷,夏新兴,吴立群.PVA与淀粉成膜性能的研究[J].中华纸业,2017(22):46-50.
[14]汪文娟,王华林.Nano-Si O2改性氧化淀粉/PVA复合薄膜的制备及表征[J].安徽化工,2011,37(3):20-23.
[15]尤春,张振方,童昕.PVA/明胶/淀粉水凝胶的制备及性能[J].塑料工业,2007,35(2):47-49.
[16]刘文霞,徐冬美,时芳芳,等.壳聚糖-聚乙烯醇共混膜的制备与性能[J].包装工程,2016(7):40-44.
[17]Wu W,Tian H.Influence of Polyol Plasticizers on the properties of polyvinyl Alcohol Films Fabricated by Melt Processing[J].Journal of Polymers and the Environment,2012,20:63-69.
[18]KUBO J I,RAHMAN N,TAKAHASHI N,et al.Improvement of Poly(vinyl alcohol)Properties by the Addition of Magnesium Nitrate[J].Journal of Applied Polymer Science,2009,112:1647-1652.
[19]刘茜,田华峰,戈翔,等.PVA/Cu SO4·5H2O复合膜的制备及其结构与性能研究[J].中国塑料,2016,30(1):92-97.
[20]吕玉彬,刘全校,许文才,等.国内PVA薄膜材料改性研究进展[J].北京印刷学院学报,2011,19(4):1-4.
[21]高梦蛟,刘伟,赵立伟,等.化学交联聚乙烯醇降失水剂的交联度与性能探究[J].化学研究与应用,2017,29(7):986-991.
[22]WANG N,SI Y,YU J,et al.Nano-fiber/net structured PVA membrane:Effects of formic acid as solvent and crosslinking agent on solution properties and membrane morphological structures[J].Materials&Design,2017,120:135-143.
[23]YUAN H K,ZHOU Y,REN J.Pervaporation dehydration of ethyl acetate aqueous solution using the doubly modified polyvinyl alcohol(PVA)composite membrane[J].Polymer Bulletin,2014,71(10):2571-2590.
[24]许晶,余建佳,袁园,等.磺化聚苯乙烯/聚乙烯醇交联膜的制备与性能[J].膜科学与技术,2010,30(4):24-27.
[25]刘美华,黄斌,苟黎婷,等.纳米微晶纤维素改性的石墨烯增强聚乙烯醇膜的研究[J].南华大学学报(自然科学版),2017,31(2):67-73.
[26]陈红,俞珊,徐静,等.聚乙烯醇/海藻酸钠复合膜的制备及性能研究[J].化工新型材料,2011,39(9):62-73.
[27]KIM E Y,YIM S D,BAE B,et al.Study of a highly durable lowhumidification membrane electrode assembly using crosslinked polyvinyl alcohol for polymer electrolyte membrane fuel cells[J].Journal of Solid State Electrochemistry,2016,20(6):1723-1730.
[28]陈冰.改性聚乙烯醇复合膜的制备与性能研究[D].大连:大连理工大学,2006.
[29]徐林,侯春龙,刘月胜,等.金属盐改性PVA膜及其渗透汽化性能[J].膜科学与技术,2016,36(2):60-64.
[30]宋杰,于慧,李强,等.纳米Ti O2改性PVA/聚哌嗪酰胺复合纳滤膜的制备[J].中国给水排水,2014(21):98-102.
[31]石勇,宋冰,陆海龙,等.纸质复合超滤膜的制备与研究[J].纤维素科学与技术,2016,24(1):21-26.
[32]陈可可,翟丁,刘文超,等.聚乙烯醇磷酸铵改性聚乙烯醇纳滤膜的研究[J].水处理技术,2015(7):54-56.
[33]KIM Y H.Hyperbranched polymers 10 years after[J].Journal of Polymer Science Part A Polymer Chemistry,2015,36(11):1685-1698.
[34]SAMUELSSON J,SUNDELL P E,JOHANSSON M.Synthesis and polymerization of a radiation curable hyperbranched resin based on epoxy functional fatty acids[J].Progress in Organic Coatings,2004,50(3):193-198.
[35]WEI X Z,ZHU L P,DENG H Y,et al.New type of nanofiltration membrane based on crosslinked hyperbranched polymers[J].Journal of Membrane Science,2008,323(2):278-287.
[36]MAHDAVI H,HOSSEINZADEH M T,SHAHALIZADE T.Effect of hyperbranched polyester and poly(amine ester)on the performance and properties of polyethersulfone membranes[J].Journal of the Iranian Chemical Society,2015,12(8):1-8.
[37]杨萍.超支化聚酯的亲水改性及其对PVA渗透汽化膜分离性能的影响[D].长春:长春工业大学,2015.
[38]陈冰,仉春华,杨凤林,等.聚乙烯醇陶瓷复合膜的制备与性能研究[J].水处理技术,2006,32(10):17-20.
[39]HU Y,GAO C,YAN F,et al.Enhancing the performance of aromatic polyamide reverse osmosis membrane by surface modification via covalent attachment of polyvinyl alcohol(PVA)[J].Journal of Membrane Science,2016,501:209-219.
[40]吴春金,张龙,李磊,等.聚乙烯醇复合超滤膜的研制及其耐污染性能[J].水处理技术,2008,34(4):40-43.
[41]吴宗策,郭玉阳,梁松苗,等.高性能聚醚砜/聚乙烯醇复合超滤膜的研究[J]水处理技术,2016,42(2):51-55.
[42]NAZRI N A M,LAU W J,ISMAIL A F.Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrileg-poly(vinyl alcohol)graft copolymer[J].Korean Journal of Chemical Engineering,2015,32(9):1-11.
[43]汪艳,胡惠敏.聚乙烯醇改性聚丙烯微孔膜的性能[J].武汉工程大学学报,2014,36(5):38-41.
[44]冯宗财,宋秀美,王跃川.聚醚改性超支化聚合物的合成及性能[J].化工新型材料,2014,42(11):79-81.