Effect of poly(ethylene glycol) 200 on the formation of a polyetherimide asymmetric membrane and its performance in aqueous solvent mixture permeation
Effect of poly(ethylene glycol) 200 on the formation of a polyetherimide asymmetric membrane and its performance in aqueous solvent mixture permeation
复制标题
DOI：
10.1016/j.memsci.2003.11.002
复制
发表时间：
2004-02-15
影响因子：
9.5
通讯作者：
Lee, KH
中科院分区：
文献类型：
--
作者：
Kim, IC;Lee, KH
为了研究聚乙二醇200对膜性能的影响，以N-甲基-2-吡咯烷酮为溶剂，聚乙二醇200为添加剂，采用干/湿相转化法制备了小孔不对称聚醚酰亚胺(PEI)膜。实验表明，聚乙二醇200的加入对铸膜液的性能、渗透性能和膜结构都有影响。此外，干燥过程也会影响致密皮肤层的形成。聚乙二醇200用量的增加大大提高了溶质截留率。干燥工艺提高了废品率。我们还观察了混合溶剂(水/乙醇)对不同孔径的膜渗透的影响。在具有致密皮肤层的膜的情况下，溶剂渗透与溶液粘度、表面张力和膜-溶剂相互作用有关。(C)2003爱思唯尔B.V.保留所有权利。
To investigate the effect of poly(ethylene glycol) (PEG) 200 on membrane performance, asymmetric polyetherimide (PEI) membranes with a small pore size were prepared by dry/wet-phase inversion from the casting solution containing N-methyl-2-pyrrolidone as a solvent and poly(ethylene glycol) 200 as an additive. Our experiment revealed that the addition of PEG 200 has an influence on the casting solution properties, permeation properties, and resulting membrane structures. Moreover, a drying process also affects the formation of a dense skin layer. Increasing the amount of PEG 200 drastically improved the solute rejection rate. The drying process improved the rejection rate. We also observed the effect of the mixed solvent (water/ethanol) on permeation through the membranes with various pore sizes. In the case of the membrane with a dense skin layer, the solvent permeation showed relationships with solution viscosity, surface tension, and membrane-solvent interaction. (C) 2003 Elsevier B.V. All rights reserved.