Effect of PEG additive on membrane formation by phase inversion
Effect of PEG additive on membrane formation by phase inversion
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DOI：
10.1016/s0376-7388(97)00224-x
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发表时间：
1998-01-21
影响因子：
9.5
通讯作者：
Lee, KH
中科院分区：
文献类型：
--
作者：
Kim, JH;Lee, KH
本文研究了PEG作为造孔剂对膜结构形成和渗透性能的影响，并结合相转化过程中热力学和动力学性质的变化进行了分析。以聚砜（PSf）/N-甲基-2-吡咯烷酮（NMP）/聚乙二醇（PEG）为铸膜液，加入水凝固剂制备了膜。通过改变PEG添加剂的分子量和PEG与NMP的比例制备所得膜，其特征在于通过扫描电子显微镜观察，水通量和PEG截留率的测量。通过凝聚值、透光率、粘度等指标研究了成膜体系的热力学和动力学性质。讨论了最终膜结构/渗透性能与成膜体系热力学/动力学性能之间的关系。(C)1998年Elsevier Science B.V.
This study investigates the effect of PEG additive as a pore-former on the structure formation of membranes and their permeation properties connected with the changes of thermodynamic and kinetic properties in phase inversion process. The membranes were prepared by using polysulfone (PSf)/N-methyl-2-pyrrolidone (NMP)/poly(ethylene glycol) (PEG) casting solution and water coagulant. The resulting membranes prepared by changing the molecular weight of PEG additive and the ratio of PEG to NMP were characterized by scanning electron microscope observations, measurements of water flux and PEG rejection. The thermodynamic and kinetic properties of membrane-forming system were studied through coagulation value, light transmittance and viscosity. The correlations between the final membrane structure/permeation properties and thermodynamic/kinetic properties of membrane forming system are discussed extensively. (C) 1998 Elsevier Science B.V.