【摘 要】
：
本文用浸没沉淀相转化法制备了混合基质膜,并用于染料脱盐.芳香聚(间苯二甲酰间苯二胺)(PMIA)作为聚合物基体,加入金属有机骨架(MIL-53(Al))至铸膜液中,并制成完整的不对称膜.从SEM图中可以看出MIL-53(Al)纳米粒子成功的分散在膜中.实验发现,MIL-53 (Al)的最佳添加量是0.5 wt％(M-0.5),并且将此膜运用到染料脱盐中.M-0.5的截留分子量为1850 Da,在染
【机 构】
：
浙江工业大学膜分离与水科学技术中心,杭州,310014
论文部分内容阅读
本文用浸没沉淀相转化法制备了混合基质膜,并用于染料脱盐.芳香聚(间苯二甲酰间苯二胺)(PMIA)作为聚合物基体,加入金属有机骨架(MIL-53(Al))至铸膜液中,并制成完整的不对称膜.从SEM图中可以看出MIL-53(Al)纳米粒子成功的分散在膜中.实验发现,MIL-53 (Al)的最佳添加量是0.5 wt％(M-0.5),并且将此膜运用到染料脱盐中.M-0.5的截留分子量为1850 Da,在染料脱盐过程中,发现M-0.5对氯化钠和硫酸钠的截留率分别低于11％和37％.此外,在染料/硫酸钠混合体系中,M-0.5对亚硝基红盐,二甲酚橙,丽春红S的截留率分别是83.9％,98.3％和99.8％.M-0.5对于硫酸钠的截留率低于几种商业膜(NF90,NF270,DK).在染料脱盐过程中结合渗滤过程有一定的应用前景.
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