Synthesis and gas permeation properties of amphiphilic graft copolymer membranes

Sung Hoon Ahn; Jin Ah Seo; Jong Hak Kim; Youngdeok Ko; Seong Uk Hong

doi:10.1016/j.memsci.2009.08.037

Synthesis and gas permeation properties of amphiphilic graft copolymer membranes

Sung Hoon Ahn, Jin Ah Seo, Jong Hak Kim, Youngdeok Ko, Seong Uk Hong

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Amphiphilic graft copolymers comprising poly(vinyl chloride) (PVC) main chains and poly(oxyethylene methacrylate) (POEM) side chains, i.e. PVC-g-POEM, were synthesized via atom transfer radical polymerization (ATRP) using direct initiation of the secondary chlorines of PVC. Successful synthesis of the graft copolymer was confirmed using ¹H NMR and FT-IR spectroscopy. TEM and DSC analysis revealed the well-defined microphase-separated structure of the graft copolymer into hydrophobic PVC and hydrophilic POEM domains. All the membranes exhibited amorphous structures and the intersegmental d-spacing were increased with the grafting degree, as characterized by XRD analysis. Permeation experimental results using a CO₂/N₂ (50/50) mixture indicated that as an amount of POEM in a copolymer increased, CO₂ permeability increased dramatically without the sacrifice of selectivity. For example, the CO₂ permeability [1 × 10^-8 cm³(STP) cm/cm² s cmHg (100 Barrer)] of PVC-g-POEM with 70 wt% of POEM at 25 °C was about 70 times higher than that of the pure PVC membrane [1.45 × 10^-10 cm³(STP) cm/cm² s cmHg (1.45 Barrer)].

Original language	English
Pages (from-to)	128-133
Number of pages	6
Journal	Journal of Membrane Science
Volume	345
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2009.08.037
Publication status	Published - 2009 Dec 1

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) ( R11-2007-050-04003-0 ) and by the Ministry of Knowledge Economy (MKE) and Korea Institute for Advancement in Technology (KIAT) through the Workforce Development Program in Strategic Technology.

All Science Journal Classification (ASJC) codes

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

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10.1016/j.memsci.2009.08.037

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title = "Synthesis and gas permeation properties of amphiphilic graft copolymer membranes",

abstract = "Amphiphilic graft copolymers comprising poly(vinyl chloride) (PVC) main chains and poly(oxyethylene methacrylate) (POEM) side chains, i.e. PVC-g-POEM, were synthesized via atom transfer radical polymerization (ATRP) using direct initiation of the secondary chlorines of PVC. Successful synthesis of the graft copolymer was confirmed using 1H NMR and FT-IR spectroscopy. TEM and DSC analysis revealed the well-defined microphase-separated structure of the graft copolymer into hydrophobic PVC and hydrophilic POEM domains. All the membranes exhibited amorphous structures and the intersegmental d-spacing were increased with the grafting degree, as characterized by XRD analysis. Permeation experimental results using a CO2/N2 (50/50) mixture indicated that as an amount of POEM in a copolymer increased, CO2 permeability increased dramatically without the sacrifice of selectivity. For example, the CO2 permeability [1 × 10-8 cm3(STP) cm/cm2 s cmHg (100 Barrer)] of PVC-g-POEM with 70 wt% of POEM at 25 °C was about 70 times higher than that of the pure PVC membrane [1.45 × 10-10 cm3(STP) cm/cm2 s cmHg (1.45 Barrer)].",

author = "Ahn, {Sung Hoon} and Seo, {Jin Ah} and Kim, {Jong Hak} and Youngdeok Ko and Hong, {Seong Uk}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) ( R11-2007-050-04003-0 ) and by the Ministry of Knowledge Economy (MKE) and Korea Institute for Advancement in Technology (KIAT) through the Workforce Development Program in Strategic Technology.",

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T1 - Synthesis and gas permeation properties of amphiphilic graft copolymer membranes

AU - Ahn, Sung Hoon

AU - Seo, Jin Ah

AU - Kim, Jong Hak

AU - Ko, Youngdeok

AU - Hong, Seong Uk

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) ( R11-2007-050-04003-0 ) and by the Ministry of Knowledge Economy (MKE) and Korea Institute for Advancement in Technology (KIAT) through the Workforce Development Program in Strategic Technology.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Amphiphilic graft copolymers comprising poly(vinyl chloride) (PVC) main chains and poly(oxyethylene methacrylate) (POEM) side chains, i.e. PVC-g-POEM, were synthesized via atom transfer radical polymerization (ATRP) using direct initiation of the secondary chlorines of PVC. Successful synthesis of the graft copolymer was confirmed using 1H NMR and FT-IR spectroscopy. TEM and DSC analysis revealed the well-defined microphase-separated structure of the graft copolymer into hydrophobic PVC and hydrophilic POEM domains. All the membranes exhibited amorphous structures and the intersegmental d-spacing were increased with the grafting degree, as characterized by XRD analysis. Permeation experimental results using a CO2/N2 (50/50) mixture indicated that as an amount of POEM in a copolymer increased, CO2 permeability increased dramatically without the sacrifice of selectivity. For example, the CO2 permeability [1 × 10-8 cm3(STP) cm/cm2 s cmHg (100 Barrer)] of PVC-g-POEM with 70 wt% of POEM at 25 °C was about 70 times higher than that of the pure PVC membrane [1.45 × 10-10 cm3(STP) cm/cm2 s cmHg (1.45 Barrer)].

AB - Amphiphilic graft copolymers comprising poly(vinyl chloride) (PVC) main chains and poly(oxyethylene methacrylate) (POEM) side chains, i.e. PVC-g-POEM, were synthesized via atom transfer radical polymerization (ATRP) using direct initiation of the secondary chlorines of PVC. Successful synthesis of the graft copolymer was confirmed using 1H NMR and FT-IR spectroscopy. TEM and DSC analysis revealed the well-defined microphase-separated structure of the graft copolymer into hydrophobic PVC and hydrophilic POEM domains. All the membranes exhibited amorphous structures and the intersegmental d-spacing were increased with the grafting degree, as characterized by XRD analysis. Permeation experimental results using a CO2/N2 (50/50) mixture indicated that as an amount of POEM in a copolymer increased, CO2 permeability increased dramatically without the sacrifice of selectivity. For example, the CO2 permeability [1 × 10-8 cm3(STP) cm/cm2 s cmHg (100 Barrer)] of PVC-g-POEM with 70 wt% of POEM at 25 °C was about 70 times higher than that of the pure PVC membrane [1.45 × 10-10 cm3(STP) cm/cm2 s cmHg (1.45 Barrer)].

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Synthesis and gas permeation properties of amphiphilic graft copolymer membranes

Abstract

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