A sacrificial-layer approach to prepare microfiltration membranes
A sacrificial-layer approach to prepare microfiltration membranes
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DOI：
10.1016/j.memsci.2008.03.059
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发表时间：
2008-07
影响因子：
9.5
通讯作者：
Xue-mei Li;Yunhui Ji;T. He;Matthias Wessling
中科院分区：
文献类型：
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作者：
Xue-mei Li;Yunhui Ji;T. He;Matthias Wessling
本文报道了用牺牲层共铸法制备亲水性微滤膜。膜是用两种聚合物溶液制备的。牺牲涂层的选择是基于涂层溶液/PSf溶液的溶液混合以及两种溶液的共铸。基于分层准则，选择PEI作为牺牲层对聚砜膜结构进行研究。用这种方法制备的聚砜膜具有更好的透气性和表面孔隙率。在PSf膜表面观察到凹形结构，假设这是由于PEI层在相分离过程中产生了巨孔洞。
The preparation of hydrophilic microfiltration membranes by a sacrificial layer via co-casting is reported in this paper. The membranes were fabricated using two polymer solutions. Selection of the sacrificial coating layer was based on solution blending between coating solution/PSf solution and co-casting of two solutions. Based on delamination guideline, PEI was selected as the sacrificial layer for the investigation on PSf membrane structure. PSf membranes prepared as such showed improved permeability and surface porosity. Concave structure was observed in PSf membrane surface, hypothetically caused by the growth of macrovoids in PEI layer during phase separation.