Percolation behavior of gas permeability in rigid-flexible block copolymer membranes

Ho Bum Park, Seong Yong Ha, Young Moo Lee

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Transport of permeates through copolymer membranes with rigid and flexible block was investigated based on the percolation concept. In terms of the morphology, the percolation approach provided a rationale for the property of gas permeation behavior of block copolymer consisting of the rigid amideimide block and the flexible siloxane block. The permeability of oxygen through poly(amideimide)siloxane (SPAI) membranes containing different siloxane contents showed a peculiar permeation behavior, indicating that there existed a percolation threshold of the gas permeation at around 0.2-0.3 volume fraction of SPAI. At above the threshold volume fraction, the gas permeability of this block copolymer was proportional to the probability of spanning siloxane phase. We confirmed that an addition of flexible domains in the rigid matrix enhanced the rate of gas permeation, and the permeability of SPAI obeyed a simple power law above and near the percolation threshold. In order to inspect the present system, the percolation concept was reinterpreted to elucidate the change of gas permeability through polymeric membranes with rigid and flexible block. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)143-152
Number of pages10
JournalJournal of Membrane Science
Volume177
Issue number1-2
DOIs
StatePublished - 2000 Aug 30

Fingerprint

Siloxanes
Gas permeability
block copolymers
Permeation
Block copolymers
siloxanes
Permeability
permeability
Gases
membranes
Membranes
gases
Volume fraction
thresholds
Polymeric membranes
Copolymers
Oxygen
copolymers
oxygen
matrices

Keywords

  • Block copolymer
  • Gas separation
  • Percolation
  • Percolation threshold

Cite this

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abstract = "Transport of permeates through copolymer membranes with rigid and flexible block was investigated based on the percolation concept. In terms of the morphology, the percolation approach provided a rationale for the property of gas permeation behavior of block copolymer consisting of the rigid amideimide block and the flexible siloxane block. The permeability of oxygen through poly(amideimide)siloxane (SPAI) membranes containing different siloxane contents showed a peculiar permeation behavior, indicating that there existed a percolation threshold of the gas permeation at around 0.2-0.3 volume fraction of SPAI. At above the threshold volume fraction, the gas permeability of this block copolymer was proportional to the probability of spanning siloxane phase. We confirmed that an addition of flexible domains in the rigid matrix enhanced the rate of gas permeation, and the permeability of SPAI obeyed a simple power law above and near the percolation threshold. In order to inspect the present system, the percolation concept was reinterpreted to elucidate the change of gas permeability through polymeric membranes with rigid and flexible block. Copyright (C) 2000 Elsevier Science B.V.",
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Percolation behavior of gas permeability in rigid-flexible block copolymer membranes. / Park, Ho Bum; Ha, Seong Yong; Lee, Young Moo.

In: Journal of Membrane Science, Vol. 177, No. 1-2, 30.08.2000, p. 143-152.

Research output: Contribution to journalArticle

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T1 - Percolation behavior of gas permeability in rigid-flexible block copolymer membranes

AU - Park, Ho Bum

AU - Ha, Seong Yong

AU - Lee, Young Moo

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N2 - Transport of permeates through copolymer membranes with rigid and flexible block was investigated based on the percolation concept. In terms of the morphology, the percolation approach provided a rationale for the property of gas permeation behavior of block copolymer consisting of the rigid amideimide block and the flexible siloxane block. The permeability of oxygen through poly(amideimide)siloxane (SPAI) membranes containing different siloxane contents showed a peculiar permeation behavior, indicating that there existed a percolation threshold of the gas permeation at around 0.2-0.3 volume fraction of SPAI. At above the threshold volume fraction, the gas permeability of this block copolymer was proportional to the probability of spanning siloxane phase. We confirmed that an addition of flexible domains in the rigid matrix enhanced the rate of gas permeation, and the permeability of SPAI obeyed a simple power law above and near the percolation threshold. In order to inspect the present system, the percolation concept was reinterpreted to elucidate the change of gas permeability through polymeric membranes with rigid and flexible block. Copyright (C) 2000 Elsevier Science B.V.

AB - Transport of permeates through copolymer membranes with rigid and flexible block was investigated based on the percolation concept. In terms of the morphology, the percolation approach provided a rationale for the property of gas permeation behavior of block copolymer consisting of the rigid amideimide block and the flexible siloxane block. The permeability of oxygen through poly(amideimide)siloxane (SPAI) membranes containing different siloxane contents showed a peculiar permeation behavior, indicating that there existed a percolation threshold of the gas permeation at around 0.2-0.3 volume fraction of SPAI. At above the threshold volume fraction, the gas permeability of this block copolymer was proportional to the probability of spanning siloxane phase. We confirmed that an addition of flexible domains in the rigid matrix enhanced the rate of gas permeation, and the permeability of SPAI obeyed a simple power law above and near the percolation threshold. In order to inspect the present system, the percolation concept was reinterpreted to elucidate the change of gas permeability through polymeric membranes with rigid and flexible block. Copyright (C) 2000 Elsevier Science B.V.

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