Fabrication of high performance and durable forward osmosis membranes using mussel-inspired polydopamine-modified polyethylene supports

Soon Jin Kwon, Sang Hee Park, Min Gyu Shin, Min Sang Park, Kiho Park, Seungkwan Hong, Hosik Park, You In Park, Jung-hyun Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A thin film composite (TFC) forward osmosis (FO) membrane with high performance and superb durability was fabricated on a polydopamine (PDA)-modified polyethylene (DPE) support via an unconventional aromatic solvent-based interfacial polymerization (IP) method. The PDA coating uniformly hydrophilized the hydrophobic pristine polyethylene (PE) support, which enabled the long-term operation stability. The thin (∼8 μm) and highly porous support structure with interconnected pores was preserved after the PDA modification, leading to a remarkably low structural parameter (∼168 μm) of the support. In addition, the use of the toluene-based IP process allowed for the formation of a highly permselective polyamide selective layer on the hydrophilic DPE support, which was challenging with the conventional aliphatic solvent-based IP process. Hence, the prepared DPE-supported TFC (DPE-TFC) membrane exhibited unprecedented high FO performance, i.e., ∼4.5 times higher FO water flux and ∼63% lower specific salt flux (in FO mode) compared to the commercial HTI-CTA membrane. Furthermore, the DPE-TFC membrane possessed superior mechanical robustness, which guarantee durable operability and potential application even in mechanically harsh environments. Hence, the PE-supported FO membrane presents a new paradigm in FO membrane technology.

Original languageEnglish
Pages (from-to)89-99
Number of pages11
JournalJournal of Membrane Science
Volume584
DOIs
Publication statusPublished - 2019 Aug 15

Fingerprint

Osmosis
Osmosis membranes
osmosis
Bivalvia
Polyethylene
Polyethylenes
polyethylenes
Polymerization
membranes
Fabrication
fabrication
Membranes
Fluxes
Thin films
Membrane technology
polymerization
Composite membranes
Nylons
Toluene
Polyamides

Keywords

  • Forward osmosis
  • Interfacial polymerization
  • Polydopamine
  • Polyethylene
  • Thin film composite membrane

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Fabrication of high performance and durable forward osmosis membranes using mussel-inspired polydopamine-modified polyethylene supports. / Kwon, Soon Jin; Park, Sang Hee; Shin, Min Gyu; Park, Min Sang; Park, Kiho; Hong, Seungkwan; Park, Hosik; Park, You In; Lee, Jung-hyun.

In: Journal of Membrane Science, Vol. 584, 15.08.2019, p. 89-99.

Research output: Contribution to journalArticle

Kwon, Soon Jin ; Park, Sang Hee ; Shin, Min Gyu ; Park, Min Sang ; Park, Kiho ; Hong, Seungkwan ; Park, Hosik ; Park, You In ; Lee, Jung-hyun. / Fabrication of high performance and durable forward osmosis membranes using mussel-inspired polydopamine-modified polyethylene supports. In: Journal of Membrane Science. 2019 ; Vol. 584. pp. 89-99.
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