羧化多壁碳纳米管/海藻酸钙水凝胶过滤膜对染料的截留性能  

Dye retention properties of CMWCNT/CaAlg hydrogel filtration membrane

作　　者：赵孔银[1,2] 刘亮 郭杰[2] 夏伦[2] 刘琪 李金刚 王晓磊[2] 魏俊富[2] ZHAO Kong-yin;LIU Liang;GUO Jie;XIA Lun;LIU Qi;LI Jin-gang;WANG Xiao-lei;WEI Jun-fu(School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]天津工业大学省部共建分离膜与膜过程国家重点实验室,天津300387

出　　处：《天津工业大学学报》2018年第2期20-25,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(21304037;51708407);天津市科技特派员项目(16JCTPJC44800);天津市应用基础与前沿技术研究计划(16JCZDJC37500);大学生创新创业训练计划(201710058020;201710058069)

摘　　要：为了研发一种抗污染的复合水凝胶纳滤膜,并将其用于染料脱盐,采用CaCl_2溶液作为交联剂并不加致孔剂,制备了羧基化多壁碳纳米管/海藻酸钙(CMWCNT/Ca Alg)复合水凝胶过滤膜.通过扫描电子显微镜(SEM)和透射电子显微镜(TEM)表征膜的形态,研究了膜的力学性能、抗污染性能和含盐染料溶液的通量及截留性能.结果表明:CMWCNT/CaAlg复合膜具有良好的力学性能和抗污染性能.在CMWCNT含量为海藻酸钠质量的1%时,复合膜对考马斯亮蓝G250(M_w=854.02)的截留率接近100%,而对NaCl几乎没有截留.In order to develop anti-fouling composite hydrogel nano-filtration membrane for dye desalination,carboxyl multi-walled carbon nanotubes/calcium alginate(CMWCNT/CA)composite hydrogel filtration membrane was prepared using CaCl2 solution as the cross-linker without pore-forming agent.The morphology of membranes were characterized by scanning electron microscope(SEM)and transmission electron microscope(TEM)respectively.The mechanical behavior of the membrane,anti-fouling property and the flux and rejection of dye salt solution were also investigated.Results revealed that the composite membrane had good mechanical properties and anti-fouling performance.The separation data revealed that the composite membrane containing 1%CMWCNT content in NaAlg presented highest performance in terms of the rejections to Brilliant blue G250(Mw=854.02)being 100%.And all the CMWCNT/CaAlg composite membranes almost had no rejection to NaCl.

关 键 词：羧基化多壁碳纳米管 海藻酸钙 水凝胶 过滤膜 抗污染 染料脱盐 

分 类 号：TS102.54[轻工技术与工程—纺织工程]