层层组装法制备[CTS/SA]_(c/l)PET纳米纤维膜及动态吸附Cu^(2+)  

Preparation,characterization and Cu^(2+) dynamic adsorption of[CTS/SA]_(c/l) PET using layer-by-layer assembly coatings

作　　者：漆麟[1,2] 汪滨[1,2] 王娇娜[1,2] 李从举[1,2] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029 [2]北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《膜科学与技术》2017年第1期75-80,共6页Membrane Science and Technology

基　　金：国家自然科学基金项目(51503005;21274006);北京市科技北京百名领军人才工程(Z16111000490000);北京市百千万人才工程(110403000402);北京市属高等学校高层次人才引进与培养计划项目-北京市长城学者培育计划(CIT&TCD20150306);北京市属高校创新能力提升计划项目(TJSHG201310012021);北京市教育委员会科技计划一般项目(SQKM201710012004);北京服装学院创新团队与优秀人才选拔与培养计划项目(2014AL-68);北京服装学院校内重点项目(2016A-03);北京市服装材料研究开发与评价重点实验室开放课题(2015ZK-02)

摘　　要：静电纺纳米纤维薄膜由于其高孔隙率和大比表面积,因而广泛应用于重金属离子吸附领域.利用层层自组装法,以聚对苯二甲酸乙二醇酯为基底制备了不同浓度和层数的壳聚糖/海藻酸钠复合纳米纤维膜,并用其处理水中铜离子(Cu^(2+)).壳聚糖和海藻酸钠聚电解质溶液最佳浓度均为10.5g/L,最适宜层数为10层,当溶液pH为6时,Cu^(2+)去除率可达99.9%,使用时长达12h以上.复合膜具有高效率和良好的亲水性等特点,具有很好的应用潜力.Due to the large pore size and specific surface area,electrospun nanofiber membranes have comprehensive prospects in application in heavy metal ion adsorption. In this w o rk,a polyethylene terephthalate nanofibrous membrane for copper ion removal supported on layer-by-layer assembly coatings was prepared via electrospinning. The dynamic adsorption property has been studied. The best conditions of the membrane for copper ion removal were as follow： the optimal concentration of chitosan/sodium alginate was 10. 5 g/L and the most appropriate layers was 10 layers. The optimal pH for copper ion removal was 6. 0,and the best removal efficiency in this experiment was 99. 9%. The filtration time could last 12 h. It could be found that this nanofibrous membrane for copperion dynamic adsorption was hydrophilic and high efficient.

关 键 词：纳米纤维膜 铜离子 层层组装 动态吸附 

分 类 号：TQ342.94[化学工程—化纤工业] TB383.2[一般工业技术—材料科学与工程]