High-performance ultrathin mixed-matrix membranes based on an adhesive PGMA-co-POEM comb-like copolymer for CO2 capture

Na Un Kim, Byeong Ju Park, Jae Hun Lee, Jong Hak Kim

Research output: Contribution to journalArticle

Abstract

We report high-performance mixed-matrix membranes (MMMs) based on amine-functionalized UiO-66 (UiO-66-NH2) nanoparticles dispersed in a poly(glycidyl methacrylate-co-poly(oxyethylene methacrylate)) (PGMA-co-POEM) comb-like copolymer synthesized via low-cost free-radical polymerization. Owing to its adhesive properties and good film-forming ability, PGMA-co-POEM allows the MMMs to be fabricated as ultrathin film composite membranes without voids or defects. Additionally, the formation of covalent bonds between the copolymer and UiO-66-NH2 particles via an epoxide-amine reaction improves their interfacial compatibility. As the loading of UiO-66-NH2 fillers increases, a dual transport pathway is formed in the MMMs, significantly increasing the gas permeance. The physicochemical properties and gas separation performance of the MMMs are systematically investigated with respect to the filler loading. A MMM containing 28.6 wt% UiO-66-NH2 nanoparticles exhibits a CO2 permeance of 488 GPU (958% increase compared with a neat PGMA-co-POEM membrane) with a moderate CO2/N2 selectivity of 31.9. By reducing the thickness of the selective layer to <100 nm, the CO2 permeance is enhanced to 1320 GPU without any significant loss of selectivity (30.8), which exceeds the target performance required for practical application in the post-combustion CO2-capture process.

Original languageEnglish
Pages (from-to)14723-14731
Number of pages9
JournalJournal of Materials Chemistry A
Volume7
Issue number24
DOIs
Publication statusPublished - 2019 Jan 1

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Methacrylates
Adhesives
Copolymers
Membranes
Amines
Fillers
Gases
Nanoparticles
Covalent bonds
Ultrathin films
Composite membranes
Epoxy Compounds
Free radical polymerization
polyglycidyl methacrylate
Defects
Costs

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

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title = "High-performance ultrathin mixed-matrix membranes based on an adhesive PGMA-co-POEM comb-like copolymer for CO2 capture",
abstract = "We report high-performance mixed-matrix membranes (MMMs) based on amine-functionalized UiO-66 (UiO-66-NH2) nanoparticles dispersed in a poly(glycidyl methacrylate-co-poly(oxyethylene methacrylate)) (PGMA-co-POEM) comb-like copolymer synthesized via low-cost free-radical polymerization. Owing to its adhesive properties and good film-forming ability, PGMA-co-POEM allows the MMMs to be fabricated as ultrathin film composite membranes without voids or defects. Additionally, the formation of covalent bonds between the copolymer and UiO-66-NH2 particles via an epoxide-amine reaction improves their interfacial compatibility. As the loading of UiO-66-NH2 fillers increases, a dual transport pathway is formed in the MMMs, significantly increasing the gas permeance. The physicochemical properties and gas separation performance of the MMMs are systematically investigated with respect to the filler loading. A MMM containing 28.6 wt{\%} UiO-66-NH2 nanoparticles exhibits a CO2 permeance of 488 GPU (958{\%} increase compared with a neat PGMA-co-POEM membrane) with a moderate CO2/N2 selectivity of 31.9. By reducing the thickness of the selective layer to <100 nm, the CO2 permeance is enhanced to 1320 GPU without any significant loss of selectivity (30.8), which exceeds the target performance required for practical application in the post-combustion CO2-capture process.",
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High-performance ultrathin mixed-matrix membranes based on an adhesive PGMA-co-POEM comb-like copolymer for CO2 capture. / Kim, Na Un; Park, Byeong Ju; Lee, Jae Hun; Kim, Jong Hak.

In: Journal of Materials Chemistry A, Vol. 7, No. 24, 01.01.2019, p. 14723-14731.

Research output: Contribution to journalArticle

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