Characterization and theoretical analysis of isoporous cycloaliphatic polyurethane membrane for water treatment

Young Kwon Choi, Seung Min Park, Sangho Lee, Dahl Young Khang, Dong Chan Choi, Chung Hak Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A narrow pore size distribution is critical for most membrane separation processes even though it is difficult to achieve through conventional methods of membrane synthesis such as phase inversion. Although various technologies have been proposed for the preparation of isoporous membranes, few technologies are available for use in water treatment applications. In our previous works, we have prepared isoporous membranes using a novel technique based on soft lithography. A micro pattern of pyramid shape was applied to produce uniform pores. In this work, we aimed at the characterization of these isoporous membranes using both experimental and theoretical methods. The pore size distributions of the membranes were characterized by scanning electron microscopy image analysis. Using this image analysis technique, the pore size ranging from 2.2 to 21.4 μm could be identified. A simple theoretical model was developed to determine the pore size, porosity, and membrane resistance of the isoporous membranes. A preliminary filtration test was also carried out to examine the fundamental properties of the isoporous membranes.

Original languageEnglish
Pages (from-to)1021-1027
Number of pages7
JournalDesalination and Water Treatment
Issue number4-6
Publication statusPublished - 2014 Jan

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (NRF-2010-0029061).

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Ocean Engineering
  • Pollution


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