界面增强型PVDF/PET膜的制备及性能
|
摘要
通过对支撑材料进行表面改性处理和浸入凝胶法制备了界面增强型聚偏氟乙烯/聚对苯二甲酸乙二醇酯(PVDF/PET)超滤膜。用电导率在线测量法确定了硅烷偶联剂3-氨丙基三乙氧基硅烷(KH550)水解液的制备条件,考察了改性处理条件对PVDF/PET膜的界面性能和力学性能的影响。通过180°剥离试验测试PVDF膜与支撑层间的剥离强度,用扫描电镜观察PET无纺布及PVDF膜破坏底面的微观形貌,用傅里叶红外光谱仪表征PET表面化学组成。结果表明,水解液中KH550用量较少时(≤3%),处理时间延长,PVDF/PET间的剥离强度增大,水解液中KH550用量较多时(>3%),处理时间延长,PVDF/PET间的剥离强度先增大后减小;PVDF/PET膜的拉伸强度随水解液中KH550用量的增加或处理时间的延长先增大后略减小。改性前后PVDF/PET膜的分离与透过性能对比表明,PET表面改性后,PVDF膜的牛血清白蛋白(BSA)截留率几乎不受影响,水通量略增。
An interface-enhanced PVDF/PET ultrafiltration membrane was successfully prepared by immersion precipitation using a surface modified PET nonwoven as support material. The preparation conditions of the silane coupling agent KH550(3-aminopropyltriethoxysilane) hydrolyzate were obtained via on-line conductivity measurement. The effects of the modification conditions on the interfacial and mechanical properties of the PVDF/PET membrane were investigated in this work. The peel strength,surface micro-morphology and chemical composition of the prepared membrane were characterized by the180°-peel test, SEM and FTIR, respectively. When KH550 content in the hydrolysate was less than 3%,the peel strength between the PVDF and PET increased with increasing treatment time. While KH550 content in the hydrolysate was higher than 3%, the peel strength between PVDF and PET increased firstly and then decreased slightly with increasing treatment time. Furthermore, with increasing KH550 concentration or treatment time, the tensile strength of PVDF/PET membrane showed a "volcanic" trend.The separation and permeation test results indicated that the rejection of bovine serum albumin(BSA) in PVDF membrane was almost constant and the water flux increased slightly after modification the PET surface.
An interface-enhanced PVDF/PET ultrafiltration membrane was successfully prepared by immersion precipitation using a surface modified PET nonwoven as support material. The preparation conditions of the silane coupling agent KH550(3-aminopropyltriethoxysilane) hydrolyzate were obtained via on-line conductivity measurement. The effects of the modification conditions on the interfacial and mechanical properties of the PVDF/PET membrane were investigated in this work. The peel strength,surface micro-morphology and chemical composition of the prepared membrane were characterized by the180°-peel test, SEM and FTIR, respectively. When KH550 content in the hydrolysate was less than 3%,the peel strength between the PVDF and PET increased with increasing treatment time. While KH550 content in the hydrolysate was higher than 3%, the peel strength between PVDF and PET increased firstly and then decreased slightly with increasing treatment time. Furthermore, with increasing KH550 concentration or treatment time, the tensile strength of PVDF/PET membrane showed a "volcanic" trend.The separation and permeation test results indicated that the rejection of bovine serum albumin(BSA) in PVDF membrane was almost constant and the water flux increased slightly after modification the PET surface.
引文
[1]WANG D L,LI K,TEO W K.Porous PVDF asymmetric hollow fiber membranes prepared with the use of small molecular additives[J].Journal of Membrane Science,2000,178:13-23.
[2]李贵合,石艳,付志峰,等.低温等离子体引发丙烯酸在PET纳米纤维膜上的接枝聚合[J].化工进展,2013,32(9):2166-2169.LI Guihe,SHI Yan,FU Zhifeng,et al.Study on low-temperature plasma-induced graft polymerization of acrylic acid on PETelectrospun membrane[J].Chemical Industry and Engineering Progress.2013,32(9):2166-2169.
[3]NORIHIRO I.Role of polymer chain end groups in plasma modification for surface metallization of polymeric materials[J].Ploymer International,2009,58(6):585-593.
[4]杨岳,黄碧纯,叶代启.低温等离子体对多孔材料的表面改性研究进展[J].化工进展,2008,27(11):1760-1764.YANG Yue,HUANG Bichun,YE Daiqi.Surface modification of porous materials by non-thermal plasma[J].Chemical Industry and Engineering Progress,2008,27(11):1760-1764.
[5]YUE C Y,PADMANABHAN K.Interfacial studies on surface modified Kevlar fibre/epoxy matrix composites[J].Composites Part B,Engineering,1999,30(2):205-217.
[6]JING S,AISAWA S,MIURA K,et al.Adhesion of carbon steel and natural rubber by functionalized silane coupling agents[J].International Journal of Adhesion&Adhesives,2016,72:70-74.
[7]XIE Y,HILL C A S,XIAO Z,et al.Silane coupling agents used for natural fiber/polymer composites:a review[J].Composites Part A,2010,41(7):806-819.
[8]普丹丹,王瑞,董余兵,等.表面改性处理对涤纶织物/聚氯乙烯复合材料界面性能的影响[J].纺织学报,2017,38(8):102-107.PU Dandan,WANG Rui,DONG Yubing,et al.Influence of surface modification on interfacial properties of polyester fabric/polyvinyl chloride composites[J].Journal of Textile Research,2017,38(8):102-107.
[9]OYMAN ZO,TINCER T.Melt blending of poly(ethylene terephthalate)with polypropylene in the presence of silane coupling agent[J].Journal of Applied Polymer Science,2003,89(4):1039-1048.
[10]MALLAKPOUR S,MADANI M.The effect of the coupling agents KH550 and KH570 on the nanostructure and interfacial interaction of zinc oxide/chiral poly(amide-imide)nanocomposites containing lleucine amino acid moieties[J].Journal of Materials Science,2014,49(14):5112-5118.
[11]VACCHE S D,OLIVEIRA F,LETERRIER Y,et al.Effect of silane coupling agent on the morphology,structure,and properties of poly(vinylidene fluoride-trifluoroethylene)/BaTiO3,composites[J].Journal of Materials Science,2014,49(13):4552-4564.
[12]刘立柱,高琳,宋玉侠,等.偶联剂对聚酰亚胺/纳米Al2O3杂化薄膜结构与性能的影响[J].功能材料,2008,39(11):1887-1889.LIU L Z,GAO L,SONG Y X,et al.Effects of coupling agents on structure and properties of polyimide/nano-alumina hybrid films[J].Journal of Functional Materials,2008,39(11):1887-1889.
[13]刘佳,姚光晔.硅烷偶联剂的水解工艺研究[J].中国粉体技术,2014,20(4):60-63.LIU Jia,YAO Guangye.Research on hydrolysis process of silane coupling agent[J].China Power Science and Technology,2014,20(4):60-63.
[14]SELVARAJ Munirasu,FAWZI Banat,ALI Ahmed Durrani,et al.Intrinsically superhydrophobic PVDF membrane by phase inversion for membrane distillation[J].Desalination,2017,417:77-86.
[15]刘忠英,侯铮迟,陆晓峰,等.不同分子量聚醚砜超滤膜性能的研究(Ⅱ)有否无纺布支撑的影响[J].膜科学与技术,2011,31(6):13-18.LIU Zhongying,HOU Zhengchi,LU Xiaofeng,et al.Performance of ultrafiltration membranes with different polyethersulfone molecular weights(Ⅱ)Effectofsupportingandnonsupporting[J].MembraneScience and Technology,2011,31(6):13-18.
[16]张华东.无机-有机共混改性超滤膜制备及其水处理特性研究[D].济南:济南大学,2014.ZHANG Huadong.Preparation and filtration properties of modified polyvinylidene fluoride ultrafiltration membrane[D].Jinan:Jinan University,2014.
[17]孟晓荣,张海珍,黄丹曦,等.多元共混PVDF超滤膜的结构和性能研究[J].功能材料,2013,44(5):660-664.MENG Xiaorong,ZHANG Haizhen,HUANG Danxi,et al.Study on structure and properties of polybasic blend PVDF ultrafiltration membrane[J].Functional Materials,2013,44(5):660-664.
[18]张益慧,查富芳,范益群.添加剂PVP分子量对PVDF平板膜微结构及性能的影响[J].膜科学与技术,2013,33(1):6-11.ZHANG Yihui,ZHA Fufang,FAN Yiqun.Effect of PVP molecular weights on structures and properties of PVDF membranes[J].Membrane Science and Technology,2013,33(1):6-11.
[2]李贵合,石艳,付志峰,等.低温等离子体引发丙烯酸在PET纳米纤维膜上的接枝聚合[J].化工进展,2013,32(9):2166-2169.LI Guihe,SHI Yan,FU Zhifeng,et al.Study on low-temperature plasma-induced graft polymerization of acrylic acid on PETelectrospun membrane[J].Chemical Industry and Engineering Progress.2013,32(9):2166-2169.
[3]NORIHIRO I.Role of polymer chain end groups in plasma modification for surface metallization of polymeric materials[J].Ploymer International,2009,58(6):585-593.
[4]杨岳,黄碧纯,叶代启.低温等离子体对多孔材料的表面改性研究进展[J].化工进展,2008,27(11):1760-1764.YANG Yue,HUANG Bichun,YE Daiqi.Surface modification of porous materials by non-thermal plasma[J].Chemical Industry and Engineering Progress,2008,27(11):1760-1764.
[5]YUE C Y,PADMANABHAN K.Interfacial studies on surface modified Kevlar fibre/epoxy matrix composites[J].Composites Part B,Engineering,1999,30(2):205-217.
[6]JING S,AISAWA S,MIURA K,et al.Adhesion of carbon steel and natural rubber by functionalized silane coupling agents[J].International Journal of Adhesion&Adhesives,2016,72:70-74.
[7]XIE Y,HILL C A S,XIAO Z,et al.Silane coupling agents used for natural fiber/polymer composites:a review[J].Composites Part A,2010,41(7):806-819.
[8]普丹丹,王瑞,董余兵,等.表面改性处理对涤纶织物/聚氯乙烯复合材料界面性能的影响[J].纺织学报,2017,38(8):102-107.PU Dandan,WANG Rui,DONG Yubing,et al.Influence of surface modification on interfacial properties of polyester fabric/polyvinyl chloride composites[J].Journal of Textile Research,2017,38(8):102-107.
[9]OYMAN ZO,TINCER T.Melt blending of poly(ethylene terephthalate)with polypropylene in the presence of silane coupling agent[J].Journal of Applied Polymer Science,2003,89(4):1039-1048.
[10]MALLAKPOUR S,MADANI M.The effect of the coupling agents KH550 and KH570 on the nanostructure and interfacial interaction of zinc oxide/chiral poly(amide-imide)nanocomposites containing lleucine amino acid moieties[J].Journal of Materials Science,2014,49(14):5112-5118.
[11]VACCHE S D,OLIVEIRA F,LETERRIER Y,et al.Effect of silane coupling agent on the morphology,structure,and properties of poly(vinylidene fluoride-trifluoroethylene)/BaTiO3,composites[J].Journal of Materials Science,2014,49(13):4552-4564.
[12]刘立柱,高琳,宋玉侠,等.偶联剂对聚酰亚胺/纳米Al2O3杂化薄膜结构与性能的影响[J].功能材料,2008,39(11):1887-1889.LIU L Z,GAO L,SONG Y X,et al.Effects of coupling agents on structure and properties of polyimide/nano-alumina hybrid films[J].Journal of Functional Materials,2008,39(11):1887-1889.
[13]刘佳,姚光晔.硅烷偶联剂的水解工艺研究[J].中国粉体技术,2014,20(4):60-63.LIU Jia,YAO Guangye.Research on hydrolysis process of silane coupling agent[J].China Power Science and Technology,2014,20(4):60-63.
[14]SELVARAJ Munirasu,FAWZI Banat,ALI Ahmed Durrani,et al.Intrinsically superhydrophobic PVDF membrane by phase inversion for membrane distillation[J].Desalination,2017,417:77-86.
[15]刘忠英,侯铮迟,陆晓峰,等.不同分子量聚醚砜超滤膜性能的研究(Ⅱ)有否无纺布支撑的影响[J].膜科学与技术,2011,31(6):13-18.LIU Zhongying,HOU Zhengchi,LU Xiaofeng,et al.Performance of ultrafiltration membranes with different polyethersulfone molecular weights(Ⅱ)Effectofsupportingandnonsupporting[J].MembraneScience and Technology,2011,31(6):13-18.
[16]张华东.无机-有机共混改性超滤膜制备及其水处理特性研究[D].济南:济南大学,2014.ZHANG Huadong.Preparation and filtration properties of modified polyvinylidene fluoride ultrafiltration membrane[D].Jinan:Jinan University,2014.
[17]孟晓荣,张海珍,黄丹曦,等.多元共混PVDF超滤膜的结构和性能研究[J].功能材料,2013,44(5):660-664.MENG Xiaorong,ZHANG Haizhen,HUANG Danxi,et al.Study on structure and properties of polybasic blend PVDF ultrafiltration membrane[J].Functional Materials,2013,44(5):660-664.
[18]张益慧,查富芳,范益群.添加剂PVP分子量对PVDF平板膜微结构及性能的影响[J].膜科学与技术,2013,33(1):6-11.ZHANG Yihui,ZHA Fufang,FAN Yiqun.Effect of PVP molecular weights on structures and properties of PVDF membranes[J].Membrane Science and Technology,2013,33(1):6-11.