Polymeric membranes composed of polystyrenes tethering amino acids for preferential CO 2 separation over H 2

Ikuo Taniguchi, Yuka Ootera, Firoz A. Chowdhury, Kin Ya Tomizaki, Teruhiko Kai, Shingo Kazama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Various N-tert-butoxycarbonyl (N-Boc) amino acids, such as glycine, valine, and serine, were combined to 4-chloromethylstyrene. The resulted monomers were readily polymerized to give polystyrenes tethering an amino acid by a conventional free radical polymerization technique. After deprotection of the N-Boc group with trifluoroacetic acid, the obtained polystyrene derivatives were soluble in ethanol and spin-coated on a commercial poly(ether sulfone) porous membrane to fabricate a composite membrane for CO 2 separation over H 2. The CO 2 selective layer of synthesized PSt was ca. 200 nm thick, and the composite membranes showed preferential CO 2 separation over H 2, while parent polystyrene passed through H 2 rather than CO 2. Especially, the separation factor aCO 2=H 2 was raised after alkaline treatment to form free primary amine on the terminus of graft chain. Serine tethered polystyrene showed the highest aCO 2=H 2 (16) among them, which suggested the hydroxyl group would enhance the CO 2 affinity of primary amine.

Original languageEnglish
Pages (from-to)405-415
Number of pages11
JournalPolymer Bulletin
Volume69
Issue number4
DOIs
Publication statusPublished - Aug 1 2012

Fingerprint

tethering
Polymeric membranes
Polystyrenes
Carbon Monoxide
amino acids
Amino acids
polystyrene
membranes
Amino Acids
Composite membranes
Amines
amines
Serine
Trifluoroacetic acid
sulfones
composite materials
Free radical polymerization
glycine
Trifluoroacetic Acid
Sulfones

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Polymeric membranes composed of polystyrenes tethering amino acids for preferential CO 2 separation over H 2 . / Taniguchi, Ikuo; Ootera, Yuka; Chowdhury, Firoz A.; Tomizaki, Kin Ya; Kai, Teruhiko; Kazama, Shingo.

In: Polymer Bulletin, Vol. 69, No. 4, 01.08.2012, p. 405-415.

Research output: Contribution to journalArticle

Taniguchi, Ikuo ; Ootera, Yuka ; Chowdhury, Firoz A. ; Tomizaki, Kin Ya ; Kai, Teruhiko ; Kazama, Shingo. / Polymeric membranes composed of polystyrenes tethering amino acids for preferential CO 2 separation over H 2 In: Polymer Bulletin. 2012 ; Vol. 69, No. 4. pp. 405-415.
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