蔡邦肖,张佩琴

• 1:浙江工商大学食品与生物工程学院膜科学与工程研究所

摘要(Abstract)：

将不同材料分别用作复合膜的分离层和支撑体,是制备优良选择渗透性分离膜的重要方法之一。采用浇铸工艺将具有亲水性和高分离因子的聚乙烯醇(PVA)涂覆在高度透水性的反渗透(RO)聚酰胺(PA)膜表面,制备成渗透汽化(PV)分离有机物水混合物的PVA/PA复合膜。扫描电子显微镜(SEM)和原子力显微镜(AFM)以及红外光谱分析表明,PVA-PA层结构为一体化,膜表面光滑、致密,分离层上的微囊高度下降到4nm左右。可以认为膜的优异传质性能取决于良好微结构包括PVA的化学交联和膜的结构形貌。铸膜液中PVA和交联剂的浓度以及热处理条件对复合膜分离性能的影响是明显的。这一新型的复合膜在环境温度下PV分离异丙醇(IPA)/水混合物的渗透通量(J)接近100g·m-2·h-1,渗透物中的水含量(Cp-H2O)大于99.5%。

关键词(KeyWords)： 复合膜;反渗透;渗透汽化;微结构;传质

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金重点重大项目(ZC0204);; 浙江省“重中之重”项目“食品科学与工程”学科的资助

作者(Author): 蔡邦肖,张佩琴

参考文献(References)：

• [1]Cai B X.Polymer membranes for separating organic mixtures[J].Journal of Applied Polymer Science,2006,101[2]:1160-1164
• [2]Cai B X.Permselectivity of polyamide composite membrane modified by solvent[J].Journal of Applied Polymer Science,2004,92[2]:1005-1010.
• [3]Cai B X,Nguyen T Q,Valleton J M et al.In-situ preparation of defects on the skin layer of reverse osmosis cellulose ester membranes for pervaporation purposes[J].Journal of Membrane Science,2003,216[1-2]:165-175.
• [4]Cai B X,Zhou Y,Hu J et al.Solvent treatment of CTA hollow fiber membrane and its pervaporation performance for organic/organic mixture[J].Desalination,2002,151[2]:117-121.
• [5]Cai B X,Yu L,Ye H L et al.Effect of separation layer in pervaporation composite membrane for MTBE/MeOH separation[J].Journal of Membrane Science,2001,194[2]:151-156
• [6]Yeom C K,Lee K H.Pervaporation separation of water-acetic acid mixtures through poly[vinyl alcohol]membranes crosslinked with glutaraldehyde[J].Journal of Membrane Science,1996,109[2]:257-265.
• [7]Anne Jonquieres,Robert Clement,Pierre Locho et al.Industrial state-of-the-art of pervaporation and vapour permeation in the western countries[J].Journal of Membrane Science,2002,206[1-2]:87-117.
• [8]CAI Bang-xiao[蔡邦肖],ZHANG Jin-feng[张金锋].Industrial state-of-the-art of organic[water]mixture separation overseas[有机物[水]混合物分离的国外膜工业现状][J].Water Treatment Technology[水处理技术],2005,31[1]:1-6.
• [9]CAI Bang-xiao[蔡邦肖],ZHANG Pei-qin[张佩琴].The state of the art of poly[vinyl alcohol]membrane for pervaporation[聚乙烯醇渗透汽化分离膜的研究进展][J].Journal of East China University of Science and Engineering[Natural Science][华东理工大学学报[自然科学版]],2006,32[2]:235-240.
• [10]CAI Bang-xiao[蔡邦肖].Preparation process of a polyvinyl alcohol and polyamide composite membrane[一种聚乙烯醇/聚酰胺复合膜的制备方法][P].China Patent,Application No.200510061834.4,2005-12-06.
• [11]CAI Bang-xiao[蔡邦肖].Preliminary study of preparation and characterization of multilayer polyamide composite membranes[多层聚酰胺复合膜的制备及其特性的初步研究][J].Water Treatment Technology[水处理技术],2007,33[9]:16-20.
• [12]ZHANG Hao-qin[张浩勤],FAN Guo-dong[范国栋],LIU Jin-dun[刘金盾]et al.Preparation of composite charge-mosaic membrane by interfacial polymerization[界面聚合制备复合荷电镶嵌膜][J].J Chem Eng of Chinese Univ[高校化学工程学报],2005,19[2]:156-161.
• [13]MIAO Jing[苗晶],CHEN Guo-hua[陈国华],GAO Cong-jie[高从堦]et al.Preparation and characterization of sulfated chitosan[SCS]/polysulfone[PSF]cmposite nanofiltration membrane cross-linked by glutaraldehyde[戊二醛交联的壳聚糖硫酸酯/聚砜复合纳滤膜的制备及截留特性][J].J Chem Eng of Chinese Univ[高校化学工程学报],2007,21[2]:227-232.