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권영남

Kwon, Young-Nam
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Tailoring interlayer structure of molecular layer-by-layer assembled polyamide membranes for high separation performance

Author(s)
Gu, Joung-EunLee, Jong SukPark, Sang-HeeKim, Il TaeChan, Edwin P.Kwon, Young-NamLee, Jung-Hyun
Issued Date
2015-11
DOI
10.1016/j.apsusc.2015.08.119
URI
https://scholarworks.unist.ac.kr/handle/201301/17923
Fulltext
http://www.sciencedirect.com/science/article/pii/S0169433215019327
Citation
APPLIED SURFACE SCIENCE, v.356, pp.659 - 667
Abstract
A molecular layer-by-layer (mLbL) technique was recently developed to fabricate polyamide (PA) thin film composite (TFC) membranes for water purification. In this study, the interlayer structure between the selective and support layers of the mLbL-assembled TFC membrane was tailored to achieve high performance applicable to seawater desalination. Introducing interlayers on porous supports prior to mLbL deposition allowed the effective PA growth by preventing monomer deposition within the support pores. The PA layers were grown via mLbL on supports coated by a series of interlayers: poly(piperazine-amide), cross-linked poly(ethyleneimine) (PEI) and a polyelectrolyte bilayer of PEI and poly(acrylic acid) (PAA) (PEI/PAA). The density and distribution of surface carboxyl groups of the interlayer were found to be key parameters that determine the structure and performance of the mLbL-assembled membranes. Among the interlayers examined, the PEI/PAA interlayer not only yielded membranes with superior performance but also with a highly smooth surface beneficial for antifouling.
Publisher
ELSEVIER SCIENCE BV
ISSN
0169-4332
Keyword (Author)
Molecular layer-by-layer assemblyPolyamideThin film composite membranesMultilayered coatingsReverse osmosis desalinationWater purification
Keyword
ULTRAFILTRATION MEMBRANEPOLYACRYLONITRILE PANWATER DESALINATIONTRIMESOYL CHLORIDEMICROSCOPYLINKINGTHIN-FILM COMPOSITEREVERSE-OSMOSIS MEMBRANESINTERFACIAL POLYMERIZATIONNANOFILTRATION MEMBRANES

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