半互穿网络法亲水改性超滤膜 |
作者:陈亚,钱欣,周勇,高从堦 |
单位: 1.浙江工业大学化材学院,浙江杭州,310014;2.杭州水处理技术研究开发中心,310012 |
关键词: 聚砜;水通量;PVP;络合剂 |
DOI号: |
分类号: O631.1 |
出版年,卷(期):页码: 2010,30(6):0-0 |
摘要: |
摘要:以聚砜(PSF)为膜材料,水为凝胶剂,采用浸没沉淀相转化法制备PSF超滤膜,在制膜过程中添加了亲水性聚合物聚乙烯基吡咯烷酮(PVP)和络合剂FeCl2来改性PSF膜的亲水性,并对其性能进行表征。用红外来表征其络合性能,用接触角测量仪测定其亲水性能。探讨了PSF含量,络合剂FeCl2用量,PVP用量,PVP分子量对超滤膜性能的影响。结果表明,增加PSF含量,膜的通量变小;增加络合剂FeCl2的含量,膜的通量由大变小,是没有加络合剂的1.3倍;增加PVP的含量,膜的亲水性得到了显著的提高。在4%的时候为最大,此时的通量比没加PVP的膜大11倍。而对于不同牌号的PVP,K60的通量最大,K90的最小。对牛血清蛋白(BSA)的截留率都达到了95%以上。 |
Abstract: Polysulfone blend membranes are fabricated by phase inversion process from casting solution of PSF, pure water as non-solvent. Add Polyvinyl pyrrolidone and FeCl2 into casting solution is order to change hydrophilic of polysulfone membrane in membrane process. Complextion characterization was performanced by IR and SEM, hydrophilic characterization was performanced by contact angle machine. The morphology of the membrane was controlled by changing the concentration of PSF, kinds of pvp, concentration of FeCl2 and so on. It was found that the membrace morphologies were changes by pvp and FeCl2 obviously. The parameters for membrane fabrication with good performances were summarized. The rate of rejection to bovine serum album(BSA) in solution(1g/L) is above 95%. |
基金项目: |
国家高技术研究发展计划资助项目(863计划)(No. 2007AA030302);国家重点基础研究发展规划项目(973计划)(No. 2009CB623402) |
作者简介: |
陈亚(1986—),男,江苏连云港市人,硕士研究生,主要从事超滤膜研究。 |
参考文献: |
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