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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received January 21, 2020
Accepted April 12, 2020

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Structural control of polysulfone membrane by using dimethylacetamide and water-pressure for water treatment

Jeonghyun Hwang¹ Hwa Jin Lee¹ Sang Wook Kang^{1 2†}

¹Department of Chemistry, Sangmyung University, Seoul 03016, Korea ²Department of Chemistry and Energy Engineering, Sangmyung University, Seoul 03016, Korea

swkang@smu.ac.kr

Korean Journal of Chemical Engineering, September 2020, 37(9), 1585-1588(4), 10.1007/s11814-020-0558-6

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Abstract

A method for separating sodium alginate through polysulfone (PSf) support by dimethyl acetamide (DMAc) and hydraulic treatment was studied. After exposing the PSf support to DMAc solvent, water pressure was applied onto the polymer support. As a result, the sponge-type structures were connected to each other and the porosity of the modified PSf increased. In addition, the support pressurized for 3minutes at 8 bar had the highest value of 133 L/m2h and removal rate of 95.0% for sodium alginate filtration test. When the PSf support was immersed in an organic solvent, the interaction between the chains of the PSf was weakened, while when water pressure was applied, pores were generated. These results were confirmed by SEM, FT-IR and porosimeter data.

Keywords

Polysulfone Porosity Dimethylacetamide Water-pressure

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