膜科学与技术

位置：首页 >> 期刊内容阅读

PVA/PEI复合纳滤膜的制备及性能优化

作者：侯影飞，²，王金凤¹，刘敏¹

单位： 1.中国石油大学（华东）重质油国家重点实验室，青岛266580；2.新疆应用职业技术学院石油与化学工程系，奎屯833200

关键词：聚乙烯亚胺；聚乙烯醇；纳滤膜

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2016,36(6):53-60

摘要：

本文用聚砜超滤膜为底膜，以聚阳离子聚乙烯亚胺（PEI）为阳离子添加剂，与聚乙烯醇（PVA）共混制备带正电复合纳滤膜。讨论了制膜条件对膜性能的影响，并用红外光谱、扫描电镜、接触角对膜的化学组成、表面形态和亲水性进行表征。结果表明随着PEI含量的增加，纳滤膜对二价盐溶液的截留率先增加后减小，最佳制膜条件为：PVA和PEI的质量分数均为2%，PVA与PEI含量比为PVA:PEI=8:1，戊二醛的质量分数为2%，硫酸的质量分数为1%；热处理温度为70℃。此时复合纳滤膜对2 g/L MgSO4溶液的截留率为94.52%，通量为5.91 L/(m2•h)。复合纳滤膜对四种盐截留率大小顺序为：MgSO4>MgCl2>Na2SO4>NaCl。添加PEI后的膜表面电位变大，分离性能增加，亲水性变好，通量增大。

In this paper, the polycationic polyethyleneimine ( PEI) as a cationic additive is blended with polyvinyl alcohol ( PVA) to prepare positively charged composite nanofiltration membrane with polysulfone ultrafiltration membrane as supporting layer. The impact of membrane preparation conditions on membrane performance was discussed. The chemical composition, surface morphology and hydrophilic of the film were characterized by infrared spectroscopy, scanning electron microscopy and the contact angle. The results showed that with the increasing of PEI content, the rejection to divalent salt solution firstly increases and then decreases. The results show that the optimum polymerization condition are as follows: the concentration(mass fraction) of PVA and PEI are 2%, PVA: PEI = 8:1, the concentration of glutaraldehyde is 2%, the concentration of sulfuric acid is 1%, dried temperature is 70℃. The membrane prepared under the optimum conditions exhibited a rejection of 94.52% to 2g/L MgSO4 with flux of 5.91 L/(m2•h). A salt rejection order of MgSO4>MgCl2>Na2SO4>NaCl. After adding PEI to the membrane, surface potential and separation performance of the membrane increases and hydrophilic, flux also increased.

基金项目：

基金项目：中央高校基本科研业务费专项资金资助（R1504059A）；省部共建分离膜与膜过程国家重点实验室开放课题（M2-201503）

作者简介：

作者简介：侯影飞（1977-），男，籍贯皖，教育程度为博士，现工作于中国石油大学（华东），副教授，研究方向为膜分离，13953223691，houyf@upc.edu.cn

参考文献：

[1] 李兆魁，周勇，朱家民，等.纳滤膜功能材料研究进展[J].水处理技术，2009，11(12)：1-6.
[2] 刘超锋，方少明.国内外纳滤膜制备新技术[J].水处理技术，2007，33(6)：5-9.
[3] Ng L Y，Mohammad A W，Ng C Y.A review on nanofiltration membrane fabrication and modification using polyelectrolytes: Effective ways to develop membrane selective barriers and rejection capability[J].Advances in colloid and interface science，2013，197：85-107.
[4] 牟涛，谭广雷，王康.荷负电手性壳聚糖纳复合滤膜的制备与性能研究[J].应用化工，2014，43(1)：82-85.
[5] 张超，张杨，郭敏，等.界面聚合法制备复合纳滤膜的缺陷及其改性研究进展[J].化工进展，2012(52)：167-171.
[6] 陈可可，翟丁，周勇，等.阳离子聚丙烯酰胺改性聚乙烯醇纳滤膜的研究[J].水处理技术，2014，40(002)：42-45.
[7] Bolto B，Tran T，Hoang M，et al.Crosslinked poly (vinyl alcohol) membranes[J].Progress in Polymer Science，2009，34(9)：969-981.
[8] Akbari A，Solymani H，Rostami S M M.Preparation and characterization of a novel positively charged nanofiltration membrane based on polysulfone[J].Journal of Applied Polymer Science，2015，132(22).
[9] Shentu B，Zhu Q，Liu Q，et al.Kinetics and equilibrium of cobalt ion adsorption on cross-linked polyethylenimine membrane[J].Journal of applied polymer science，2007，105(4)：1964-1967.
[10] Devi D A，Smitha B，Sridhar S，et al.Novel sodium alginate/polyethyleneimine polyion complex membranes for pervaporation dehydration at the azeotropic composition of various alcohols[J].Journal of chemical technology and biotechnology，2007，82(11)：993-1003.
[11] Park S J，Cheedrala R K，Diallo M S，et al.Nanofiltration membranes based on polyvinylidene fluoride nanofibrous scaffolds and crosslinked polyethyleneimine networks[J].Journal of Nanoparticle Research，2012，14(7)：1-14.
[12] 戴喆男，周勇，赵婷，等.自组装改性纳滤膜研究[J].水处理技术，2012，6：009.
[13] Lv Y，Yang H C，Liang H Q，et al.Nanofiltration membranes via co-deposition of polydopamine/polyethylenimine followed by cross-linking[J].Journal of Membrane Science，2015，476：50-58.
[14] Nnebe I M，Tilton R D，Schneider J W.Direct force measurement of the stability of poly (ethylene glycol)–polyethylenimine graft films[J].Journal of colloid and interface science，2004，276(2)：306-316.
[15] Drazevic E，Kosutic K，Dananic V，et al.Coating layer effect on performance of thin film nanofiltration membrane in removal of organic solutes[J].Separation and Purification Technology，2013，118：530-539.
[16] 孙通泽.聚乙烯亚胺药物载体的合成和表征以及对顺铂的载药研究[D].哈尔滨：东北林业大学，2012.
[17] 崔月，许云秋，姚之侃，等.正电型PVC/PEI复合纳滤膜的制备及其盐/染料分离性能[J].功能材料，2014，45(24)，24050-24054.
[18] Lang K，Sourirajan S，Matsuura T，et al.A study on the preparation of polyvinyl alcohol thin-film composite membranes and reverse osmosis testing[J].Desalination，1996, 104(3)：185-196.
[19] 陈芝海.聚电解质改性PVA复合纳滤膜的研究[D].杭州：浙江理工大学，2013.
[20] Lu X R，Gao C J，Sun X Z.Reinforced and dry polysulfonamide membranes[J].Desalination，1985，54：207-217。
[21] Zhang R，Su Y，Zhao X，et al.A novel positively charged composite nanofiltration membrane prepared by bio-inspired adhesion of polydopamine and surface grafting of poly (ethylene imine)[J].Journal of Membrane Science，2014，470：9-17.
[22] 张艳辉，王恒之，郑学晶，等.原位交联聚乙烯醇/二氧化硅杂化功能膜的制备与性能[J].广州化工，2011，39(23)：52-55.
[23] Rao P S，Smitha B，Sridhar S，et al.Preparation and performance of poly (vinyl alcohol)/polyethyleneimine blend membranes for the dehydration of 1, 4-dioxane by pervaporation: Comparison with glutaraldehyde cross-linked membranes[J].Separation and purification technology，2006，48(3)：244-254.
[24] Wu K H，Yu P Y，Hsieh Y J，et al.Preparation and characterization of silver-modified poly (vinyl alcohol)/polyethyleneimine hybrids as a chemical and biological protective material[J].Polymer degradation and stability，2009，94(12)：2170-2177.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com