微孔聚丙烯膜表面氨基化修饰.docx

第31 卷第10 期2 0 1 4 年 1 0 月精细化工FINE CHEMICALSVol． 31 ，No ． 10Oct． 2 0 1 4 功能材料 微孔聚丙烯膜表面氨基化修饰范荣玉( 武夷学院 生态与资源工程学院 绿色化工技术福建省高等学校重点实验室，福建 武夷山 354300)摘要: 发展了一种氨基接枝密度和分布可控的微孔聚丙烯膜( MPPM) 表面修饰方法。首先通过紫外光接枝聚合 法，在 MPPM 上接枝聚丙烯酸甲酯( PMA) ; 然后通过丙烯酸甲酯和乙二胺的酰胺化缩合和 Michael 加成交替反应， 将氨基可控地引入到 MPPM 表面。采用 FTIＲ、XPS 和 ESEM 对氨基化膜表面的化学组成及物理形态进行了表征; 考察了氨基化膜的表面亲水性及渗透性能。结果表明，氨基化膜表面亲水性显著改善，吸水量可达( 1 311. 29 ± 97. 56) μg / cm2 ，为未修饰 MPPM 的 145 倍; 制得的氨基化膜具有良好的水通量和金属离子渗透性能。关键词: 微孔聚丙烯膜; 表面修饰; 亲水性; 氨基; 功能材料中图分类号: TQ325． 14文献标识码: A文章编号: 1003 － 5214( 2014) 10 － 1177 － 06Aminated Modification of Microporous Polypropylene Membrane SurfaceFAN Ｒong-yu( Key Laboratory of Green Chemical Technology of Fujian Provincial Universities，School of Ecology and Ｒesource Engineering，Wuyi University，Wuyishan 354300，Fujian，China)Abstract: A facile method of modifying microporous polypropylene membrane ( MPPM) surface was developed with controllable grafting density and distribution of amino groups． Firstly，polymethyl acrylate( PMA) was grafted onto the MPPM surface via UV graft polymerization． Then，the grafted membrane alternately went through amidation condensation and Michael addition reaction for several times with ethylenediamine and methyl acrylate as the raw reactants． The aminated membranes were characterized by means of Fourier transform infrared spectroscopy ( FTIＲ ) ，X-ray photoelectron spectroscopy ( XPS ) and environmental scanning electron microscopy ( ESEM ) ． The aminated membranes show greatly enhanced surface hydrophilicity and can adsorb water of up to ( 1 311. 29 ±97. 56) μg / cm2 ，which is 145 times as much as that of the original membrane． Furthermore，the aminated membranes have satisfying performance for water flux and metal ions permeability．Key words: microporous polypropylene membrane; surface modification; hydrophilicity; amino group; functional materialsFoundation items: Supported by the Fujian Natural Science Foundation of China ( 2014J01056， 2012D130) and the Science and