Hybrid membranes of nanostructrual copolymer and ionic liquid for carbon dioxide capture

Jung Yup Lim, Jin Kyu Kim, Chang Soo Lee, Jung Min Lee, Jong Hak Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Efficient CO2 capture membranes were prepared using a hybrid comprising the poly(styrene-block-butadiene-block-styrene)-graft-poly(oxyethylene methacrylate) (SBS-g-POEM) nanostructural copolymer and the ionic liquid (IL) 1-ethyl-3-methylimidazolium dicyanamide (EMIMDCA). The SBS-g-POEM copolymer was synthesized via a mass-producible, cheap, free-radical polymerization process. The specific interaction of SBS-g-POEM with EMIMDCA and the good miscibility of these species were confirmed by Fourier transform infrared spectroscopy (FT–IR) and wide angle X-ray scattering (WAXS) and by using a universal testing machine (UTM). The microphase-separated nanostructure of the membranes and uniform distribution of EMIMDCA were also observed using transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The neat SBS membrane exhibited a CO2 permeability of 372 Barrer (1 Barrer = 10−10 cm3(STP)·cm/(cm2·s·cmHg) and CO2/N2 selectivity of 16.4; these values increased to 407 Barrer and 21.6, respectively, for the SBS-g-POEM membrane due to the high CO2 affinity of the polar POEM side chains. Upon incorporation of EMIMDCA, the CO2 permeability increased to 514 Barrer without a large sacrifice of the selectivity. In contrast, the blend of neat SBS and EMIMDCA did not show any gas separation ability due to the inhomogeneity and poor mechanical properties, indicating the importance of grafting POEM to the SBS main chains.

Original languageEnglish
Pages (from-to)254-262
Number of pages9
JournalChemical Engineering Journal
Volume322
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Ionic Liquids
Styrene
Ionic liquids
Carbon Dioxide
Carbon dioxide
Copolymers
carbon dioxide
membrane
Membranes
Methacrylates
Butadiene
Grafts
scattering
permeability
free radical
X ray scattering
FTIR spectroscopy
polymerization
inhomogeneity
transmission electron microscopy

All Science Journal Classification (ASJC) codes

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

Cite this

Lim, Jung Yup ; Kim, Jin Kyu ; Lee, Chang Soo ; Lee, Jung Min ; Kim, Jong Hak. / Hybrid membranes of nanostructrual copolymer and ionic liquid for carbon dioxide capture. In: Chemical Engineering Journal. 2017 ; Vol. 322. pp. 254-262.
@article{f4fb6b90ab2e43209f4361a5ce2cc36c,
title = "Hybrid membranes of nanostructrual copolymer and ionic liquid for carbon dioxide capture",
abstract = "Efficient CO2 capture membranes were prepared using a hybrid comprising the poly(styrene-block-butadiene-block-styrene)-graft-poly(oxyethylene methacrylate) (SBS-g-POEM) nanostructural copolymer and the ionic liquid (IL) 1-ethyl-3-methylimidazolium dicyanamide (EMIMDCA). The SBS-g-POEM copolymer was synthesized via a mass-producible, cheap, free-radical polymerization process. The specific interaction of SBS-g-POEM with EMIMDCA and the good miscibility of these species were confirmed by Fourier transform infrared spectroscopy (FT–IR) and wide angle X-ray scattering (WAXS) and by using a universal testing machine (UTM). The microphase-separated nanostructure of the membranes and uniform distribution of EMIMDCA were also observed using transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The neat SBS membrane exhibited a CO2 permeability of 372 Barrer (1 Barrer = 10−10 cm3(STP)·cm/(cm2·s·cmHg) and CO2/N2 selectivity of 16.4; these values increased to 407 Barrer and 21.6, respectively, for the SBS-g-POEM membrane due to the high CO2 affinity of the polar POEM side chains. Upon incorporation of EMIMDCA, the CO2 permeability increased to 514 Barrer without a large sacrifice of the selectivity. In contrast, the blend of neat SBS and EMIMDCA did not show any gas separation ability due to the inhomogeneity and poor mechanical properties, indicating the importance of grafting POEM to the SBS main chains.",
author = "Lim, {Jung Yup} and Kim, {Jin Kyu} and Lee, {Chang Soo} and Lee, {Jung Min} and Kim, {Jong Hak}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.cej.2017.04.030",
language = "English",
volume = "322",
pages = "254--262",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

Hybrid membranes of nanostructrual copolymer and ionic liquid for carbon dioxide capture. / Lim, Jung Yup; Kim, Jin Kyu; Lee, Chang Soo; Lee, Jung Min; Kim, Jong Hak.

In: Chemical Engineering Journal, Vol. 322, 01.01.2017, p. 254-262.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hybrid membranes of nanostructrual copolymer and ionic liquid for carbon dioxide capture

AU - Lim, Jung Yup

AU - Kim, Jin Kyu

AU - Lee, Chang Soo

AU - Lee, Jung Min

AU - Kim, Jong Hak

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Efficient CO2 capture membranes were prepared using a hybrid comprising the poly(styrene-block-butadiene-block-styrene)-graft-poly(oxyethylene methacrylate) (SBS-g-POEM) nanostructural copolymer and the ionic liquid (IL) 1-ethyl-3-methylimidazolium dicyanamide (EMIMDCA). The SBS-g-POEM copolymer was synthesized via a mass-producible, cheap, free-radical polymerization process. The specific interaction of SBS-g-POEM with EMIMDCA and the good miscibility of these species were confirmed by Fourier transform infrared spectroscopy (FT–IR) and wide angle X-ray scattering (WAXS) and by using a universal testing machine (UTM). The microphase-separated nanostructure of the membranes and uniform distribution of EMIMDCA were also observed using transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The neat SBS membrane exhibited a CO2 permeability of 372 Barrer (1 Barrer = 10−10 cm3(STP)·cm/(cm2·s·cmHg) and CO2/N2 selectivity of 16.4; these values increased to 407 Barrer and 21.6, respectively, for the SBS-g-POEM membrane due to the high CO2 affinity of the polar POEM side chains. Upon incorporation of EMIMDCA, the CO2 permeability increased to 514 Barrer without a large sacrifice of the selectivity. In contrast, the blend of neat SBS and EMIMDCA did not show any gas separation ability due to the inhomogeneity and poor mechanical properties, indicating the importance of grafting POEM to the SBS main chains.

AB - Efficient CO2 capture membranes were prepared using a hybrid comprising the poly(styrene-block-butadiene-block-styrene)-graft-poly(oxyethylene methacrylate) (SBS-g-POEM) nanostructural copolymer and the ionic liquid (IL) 1-ethyl-3-methylimidazolium dicyanamide (EMIMDCA). The SBS-g-POEM copolymer was synthesized via a mass-producible, cheap, free-radical polymerization process. The specific interaction of SBS-g-POEM with EMIMDCA and the good miscibility of these species were confirmed by Fourier transform infrared spectroscopy (FT–IR) and wide angle X-ray scattering (WAXS) and by using a universal testing machine (UTM). The microphase-separated nanostructure of the membranes and uniform distribution of EMIMDCA were also observed using transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The neat SBS membrane exhibited a CO2 permeability of 372 Barrer (1 Barrer = 10−10 cm3(STP)·cm/(cm2·s·cmHg) and CO2/N2 selectivity of 16.4; these values increased to 407 Barrer and 21.6, respectively, for the SBS-g-POEM membrane due to the high CO2 affinity of the polar POEM side chains. Upon incorporation of EMIMDCA, the CO2 permeability increased to 514 Barrer without a large sacrifice of the selectivity. In contrast, the blend of neat SBS and EMIMDCA did not show any gas separation ability due to the inhomogeneity and poor mechanical properties, indicating the importance of grafting POEM to the SBS main chains.

UR - http://www.scopus.com/inward/record.url?scp=85017385199&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017385199&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2017.04.030

DO - 10.1016/j.cej.2017.04.030

M3 - Article

VL - 322

SP - 254

EP - 262

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -