Morphological effect of dispersed phase on gas permeation properties through heterophase polymer membrane: Theoretical and experimental approaches

Cheolmin Park, Won Ho Jo, Hyun Chae Park, Yong Soo Kang

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The possibility of the continuous channel formation of the dispersed phase in immiscible polymer blends was numerically simulated by adopting the percolation concept. The numerical simulation showed that the formation probability of the continuous channels increased with the increase in the amount of the dispersed phase. Further, it increased with the decrease in the domain size of the dispersed phase at a given blend composition. The effect of the presence of the continuous channels of the dispersed phase across the membranes on gas transport properties was investigated experimentally. The domain size of the dispersed polyisoprene phase of poly(phenylene oxide)/polyisoprene (PPO/PI) blend membranes was controlled by adding the styrene-isoprene-styrene (SIS) block copolymer. When the SIS block copolymer was added at 4 wt% in PPO/PI membranes in the range of the PI content of 20- 30 wt%, the domain size of the dispersed phase was reduced markedly and its permeability was consequently increased. From the theoretical and experimental results, it could be concluded that the abrupt increase in gas permeability of the blend membranes at 20-30 wt% of PI phase may result from the formation of the continuous channels of the more permeable dispersed phase when the block copolymer is added.

Original languageEnglish
Pages (from-to)1765-1771
Number of pages7
JournalPolymer
Volume41
Issue number5
DOIs
Publication statusPublished - 2000 Jan 1

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Permeation
Polyisoprenes
Styrene
Polymers
Gases
Block copolymers
Membranes
Isoprene
Oxides
Gas permeability
Polymer blends
Transport properties
Computer simulation
Chemical analysis
styrene-isoprene-styrene block copolymer

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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title = "Morphological effect of dispersed phase on gas permeation properties through heterophase polymer membrane: Theoretical and experimental approaches",
abstract = "The possibility of the continuous channel formation of the dispersed phase in immiscible polymer blends was numerically simulated by adopting the percolation concept. The numerical simulation showed that the formation probability of the continuous channels increased with the increase in the amount of the dispersed phase. Further, it increased with the decrease in the domain size of the dispersed phase at a given blend composition. The effect of the presence of the continuous channels of the dispersed phase across the membranes on gas transport properties was investigated experimentally. The domain size of the dispersed polyisoprene phase of poly(phenylene oxide)/polyisoprene (PPO/PI) blend membranes was controlled by adding the styrene-isoprene-styrene (SIS) block copolymer. When the SIS block copolymer was added at 4 wt{\%} in PPO/PI membranes in the range of the PI content of 20- 30 wt{\%}, the domain size of the dispersed phase was reduced markedly and its permeability was consequently increased. From the theoretical and experimental results, it could be concluded that the abrupt increase in gas permeability of the blend membranes at 20-30 wt{\%} of PI phase may result from the formation of the continuous channels of the more permeable dispersed phase when the block copolymer is added.",
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Morphological effect of dispersed phase on gas permeation properties through heterophase polymer membrane : Theoretical and experimental approaches. / Park, Cheolmin; Jo, Won Ho; Park, Hyun Chae; Kang, Yong Soo.

In: Polymer, Vol. 41, No. 5, 01.01.2000, p. 1765-1771.

Research output: Contribution to journalArticle

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N2 - The possibility of the continuous channel formation of the dispersed phase in immiscible polymer blends was numerically simulated by adopting the percolation concept. The numerical simulation showed that the formation probability of the continuous channels increased with the increase in the amount of the dispersed phase. Further, it increased with the decrease in the domain size of the dispersed phase at a given blend composition. The effect of the presence of the continuous channels of the dispersed phase across the membranes on gas transport properties was investigated experimentally. The domain size of the dispersed polyisoprene phase of poly(phenylene oxide)/polyisoprene (PPO/PI) blend membranes was controlled by adding the styrene-isoprene-styrene (SIS) block copolymer. When the SIS block copolymer was added at 4 wt% in PPO/PI membranes in the range of the PI content of 20- 30 wt%, the domain size of the dispersed phase was reduced markedly and its permeability was consequently increased. From the theoretical and experimental results, it could be concluded that the abrupt increase in gas permeability of the blend membranes at 20-30 wt% of PI phase may result from the formation of the continuous channels of the more permeable dispersed phase when the block copolymer is added.

AB - The possibility of the continuous channel formation of the dispersed phase in immiscible polymer blends was numerically simulated by adopting the percolation concept. The numerical simulation showed that the formation probability of the continuous channels increased with the increase in the amount of the dispersed phase. Further, it increased with the decrease in the domain size of the dispersed phase at a given blend composition. The effect of the presence of the continuous channels of the dispersed phase across the membranes on gas transport properties was investigated experimentally. The domain size of the dispersed polyisoprene phase of poly(phenylene oxide)/polyisoprene (PPO/PI) blend membranes was controlled by adding the styrene-isoprene-styrene (SIS) block copolymer. When the SIS block copolymer was added at 4 wt% in PPO/PI membranes in the range of the PI content of 20- 30 wt%, the domain size of the dispersed phase was reduced markedly and its permeability was consequently increased. From the theoretical and experimental results, it could be concluded that the abrupt increase in gas permeability of the blend membranes at 20-30 wt% of PI phase may result from the formation of the continuous channels of the more permeable dispersed phase when the block copolymer is added.

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