基于聚酰胺-胺(PAMAM)树状分子的新型复合纳滤膜表面荷电性能的研究
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- 英文论文题名：Research on the surface charge of a novel nanofiltration membrane fabricated with poly(amido amine)(PAMAM)
- 论文作者：金丽梅 ; 于水利 ; 时文歆 ; 张春芝 ; 张瑞君
- 英文论文作者：JIN Limei ; YU Shuili ; SHI Wenxin ; ZHANG Chunzhi ; ZHANG Ruijun ; School of Food Science ; Heilongjiang Bayi Agricultural university ; School of Municipal and Environmental Engineering ; Harbin Institute of Technology ; State Key Laboratory of Pollution Controll and Resources Reuse ; Tongji University
- 年：2016
- 作者机构：黑龙江八一农垦大学食品学院;哈尔滨工业大学城市水资源与水环境国家重点实验室;同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室;
- 论文关键词：PAMAM ; TMC ; Zeta电位 ; 纳滤膜 ; 界面聚合
- 英文论文关键词：PAMAM ; TMC ; Zeta potential ; nano filtration membrane ; interfacial polymerization
- 会议召开时间：2016-11-25
- 会议录名称：第五届全国膜分离技术在冶金工业中应用研讨会论文集
- 语种：中文
- 分类号：TQ051.893
- 学会代码：LXJT
- 会议名称：第五届全国膜分离技术在冶金工业中应用研讨会
- 会议地点：中国湖南长沙
- 主办单位：中国膜工业协会、中南大学
- 学会名称：中国蓝星(集团)总公司膜科学与技术编辑部
- 页数：6
- 文件大小：384k
- 原文格式：O
- 会议级别：全国
摘要
以聚砜超滤膜为基膜,使用不同代数的聚酰胺-胺(PAMAM)与均苯三甲酰氯(TMC)的界面聚合反应制备了复合纳滤膜.通过傅里叶变换红外光谱仪(FTIR-ATR)进行膜表面结构分析,并研究了膜制备条件对其荷电性能及分离性能的影响.结果表明:聚酰胺-胺(PAMAM,G0)浓度为0.20%时,其截留率达到最大值91.2%,通量为最低值6.32L/(m~2·h).于不同代数的PAMAM单体制备NF膜,界面聚合时间控制在120 s时,纳滤膜的盐截留率达到最大,通量也较稳定.当PAMAM(G2)的浓度从0.25%(wt.)增加到2%(wt.)时,Zeta电位从-10.8 mV下降到-6.5 mV,即纳滤膜的电性向正电方向移动,当TMC浓度由0.1%增加到0.5%时,Zeta电位从-1.0 mV下降到-10.5 mV,膜表面的电负性将增加.增大PAMAM与TMC的比值或缩短界面聚合的时间,将利于制备荷正电的纳滤膜.
Composite NF membrane was prepared by interfacial polymerization with different generation poly(amidoamine)(PAMAM) and trimesoyl chloride(TMC) on the substrate of PSF UF membrane.The resulted membranes were characterized with FTIR-ATR technology to analysis the surface structure,and investigate the ZETA potential and separation performance influenced by the preparation conditions.The results indicated that the highest rejection rate reached 91.2%and the lowest flux was 6.32 L/(m~2 · h)when the concentration was 0.20%for PAMAM(GO).For different generation PAMAM,the interfacial polymerization should be controlled as 120 s,the salt rejection rate reached the highest and the flux kept stable.The concentration of PAMAM(G2) increased from 0.25%(wt.) to 2%(wt.),the ZETA potential decreased from —10.8 mV to — 6.5 mV,which means that the membrane tends to be more positive.Meanwhile the concentration of TMC increased from 0.l%to 0.5%,the zeta potential decreased from —1.0 mV to —10.5 mV,which means the membrane tends to be more negative.Improve the ratio of PAMAM to TMC or shortenthe interfacial polymerization time will benefit to prepare positive nanofiltration membrane.
Composite NF membrane was prepared by interfacial polymerization with different generation poly(amidoamine)(PAMAM) and trimesoyl chloride(TMC) on the substrate of PSF UF membrane.The resulted membranes were characterized with FTIR-ATR technology to analysis the surface structure,and investigate the ZETA potential and separation performance influenced by the preparation conditions.The results indicated that the highest rejection rate reached 91.2%and the lowest flux was 6.32 L/(m~2 · h)when the concentration was 0.20%for PAMAM(GO).For different generation PAMAM,the interfacial polymerization should be controlled as 120 s,the salt rejection rate reached the highest and the flux kept stable.The concentration of PAMAM(G2) increased from 0.25%(wt.) to 2%(wt.),the ZETA potential decreased from —10.8 mV to — 6.5 mV,which means that the membrane tends to be more positive.Meanwhile the concentration of TMC increased from 0.l%to 0.5%,the zeta potential decreased from —1.0 mV to —10.5 mV,which means the membrane tends to be more negative.Improve the ratio of PAMAM to TMC or shortenthe interfacial polymerization time will benefit to prepare positive nanofiltration membrane.
引文
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[11]Saha N K,Joshi S.V.Performance evaluation of thin film composite polyamide nano?Itration membrane with variation in monomer type[J].J Membr Sci,2009,342:60-69.
[2]高从堦,陈益棠.纳滤膜及其应用[J].中国有色金属学报,2004,14(5):310-316.
[3]张弘,何旭敏,夏海平.浅谈压力驱动膜在冶金工业上的应用[J].功能材料,2002,33(6):588-590.
[4]Bellona C,Drewes J E,Xu P.Factors affecting the rejection of organic solutes during NF/RO treatment-a literature review[J].Water Res,2004,38:2795-2809.
[5]王晓琳;涂丛慧;方彦彦;等.纳滤膜孔结构、荷电性质、分离机理及动电性质研究进展[J].2011,31(3):127-133.7-8.
[6]Tang C Y,Kwon Y N,Leckie J O.Effect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes.Ⅱ.Membrane physiochemical properties and their dependence on polyamide and coating layers[J].Desalination,2009,242:168-182.
[7]Ba C,Langer J,Economy J.Chemical modification of P84 copolyimidemem-branes by polyethylenimine for nanofiltration[J].J Membr Sci,2009,327:49-58.
[8]Li L C,Wang B G,Tan H M,et al.A novel nanofiltration membrane prepared with PAMAM and TMC by in situ interfacial polymerization on PEK-C ultrafiltration membrane[J].J Membr Sci,2006,269:84-93.
[9]金丽梅,于水利,时文歆等.基于树状分子聚酰胺-胺(PAMAM)的复合纳滤膜制备及性能研究[J].高校化学工程学报,2012,6(26):1037-1042.
[10]Freger V.Kinetics of film formation by interfacial polycondensation[J].Langmuir,2005,21:1884-1894.
[11]Saha N K,Joshi S.V.Performance evaluation of thin film composite polyamide nano?Itration membrane with variation in monomer type[J].J Membr Sci,2009,342:60-69.