Semi-interpenetrating polymer network membranes based on a self-crosslinkable comb copolymer for CO 2 capture

Na Un Kim, Byeong Ju Park, Min Su Park, Jung Tae Park, Jong Hak Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

High-performance, semi-interpenetrating polymer network (semi-IPN) membranes are prepared by incorporating a self-crosslinkable comb copolymer into the matrix of Pebax, a commercially available block copolymer with rigid polyamide blocks and soft polyethylene oxide blocks. The comb copolymer, poly(glycidyl methacrylate-g-polypropylene glycol)-co-poly(oxyethylene methacrylate) (PGP-POEM) is synthesized via one-pot free-radical polymerization and undergoes epoxide-amine self-crosslinking reaction without any additional catalyst or thermal treatment. The structural, thermal, and mechanical properties as well as the gas-separation performance of the membrane are systematically investigated by varying the content of PGP-POEM in the Pebax matrix. As the PGP-POEM loading is increased, the CO 2 permeability gradually increases without significant loss of CO 2 /N 2 selectivity. The self-crosslinked PGP-POEM comb copolymer not only effectively degrades the crystalline structure of Pebax by disturbing the chain-packing but also provides numerous CO 2 -philic groups, resulting in both increased diffusivity and solubility of CO 2 . As compared to neat Pebax membrane, the semi-IPN membrane containing 40 wt% PGP-POEM exhibits approximately 2.5-fold enhancement in CO 2 permeability (up to 236.6 Barrer) with similar CO 2 /N 2 selectivity (38.8) as that of neat Pebax membrane. This work suggests that the semi-IPN membrane based on a self-crosslinkable comb copolymer has great promise for application in CO 2 capture owing to its high performance and simple preparation process.

Original languageEnglish
Pages (from-to)1468-1476
Number of pages9
JournalChemical Engineering Journal
Volume360
DOIs
Publication statusPublished - 2019 Mar 15

Fingerprint

Interpenetrating polymer networks
Carbon Monoxide
Copolymers
polymer
membrane
Membranes
permeability
matrix
free radical
Free radical polymerization
Polyethylene oxides
Glycols
Methacrylates
Polyamides
polymerization
Epoxy Compounds
Nylons
Crosslinking
diffusivity
Block copolymers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Semi-interpenetrating polymer network membranes based on a self-crosslinkable comb copolymer for CO 2 capture",
abstract = "High-performance, semi-interpenetrating polymer network (semi-IPN) membranes are prepared by incorporating a self-crosslinkable comb copolymer into the matrix of Pebax, a commercially available block copolymer with rigid polyamide blocks and soft polyethylene oxide blocks. The comb copolymer, poly(glycidyl methacrylate-g-polypropylene glycol)-co-poly(oxyethylene methacrylate) (PGP-POEM) is synthesized via one-pot free-radical polymerization and undergoes epoxide-amine self-crosslinking reaction without any additional catalyst or thermal treatment. The structural, thermal, and mechanical properties as well as the gas-separation performance of the membrane are systematically investigated by varying the content of PGP-POEM in the Pebax matrix. As the PGP-POEM loading is increased, the CO 2 permeability gradually increases without significant loss of CO 2 /N 2 selectivity. The self-crosslinked PGP-POEM comb copolymer not only effectively degrades the crystalline structure of Pebax by disturbing the chain-packing but also provides numerous CO 2 -philic groups, resulting in both increased diffusivity and solubility of CO 2 . As compared to neat Pebax membrane, the semi-IPN membrane containing 40 wt{\%} PGP-POEM exhibits approximately 2.5-fold enhancement in CO 2 permeability (up to 236.6 Barrer) with similar CO 2 /N 2 selectivity (38.8) as that of neat Pebax membrane. This work suggests that the semi-IPN membrane based on a self-crosslinkable comb copolymer has great promise for application in CO 2 capture owing to its high performance and simple preparation process.",
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Semi-interpenetrating polymer network membranes based on a self-crosslinkable comb copolymer for CO 2 capture . / Kim, Na Un; Park, Byeong Ju; Park, Min Su; Park, Jung Tae; Kim, Jong Hak.

In: Chemical Engineering Journal, Vol. 360, 15.03.2019, p. 1468-1476.

Research output: Contribution to journalArticle

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AU - Kim, Na Un

AU - Park, Byeong Ju

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AU - Kim, Jong Hak

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