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A Novel Imide-Bridged Polysiloxane Membrane Was Prepared via One-Pot Hydrosilylation Reaction for O₂/N₂ Separation.

ABSTRACT: The synthesis of poly(methyhydrosiloxane) (PMHS) and N,N'-bis(3-allyl)pyromellitic diimide was optimized for O₂/N₂ separation. The membrane exhibits excellent mechanical and thermal properties and shows an O₂/N₂ selectivity of up to 4.44 with an O₂ permeability of 31.0 Barrer; compared with polydimethylsiloxane (PDMS) and pure polyimide (PI) membranes, the separation selectivity shows a 107% increase for PDMS, and the permeation shows a 660% increase for pure PI. The obtained results were well above the ones reported on the literature for similar conditions opening the door for the preparation of a stable polysiloxane (PMHS-I) gas separation membrane with extraordinary O₂/N₂ separation performance.

SUBMITTER: Xu S

PROVIDER: S-EPMC8340101 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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A Novel Imide-Bridged Polysiloxane Membrane Was Prepared via One-Pot Hydrosilylation Reaction for O2/N2 Separation.

Xu Shuangping S Ma Wenqiang W Zhou Hailiang H Zhang Yushu Y Jia Hongge H Xu Jingyu J Jiang Pengfei P Wang Xintian X Zhao Wenwen W

ACS omega 20210723 30

The synthesis of poly(methyhydrosiloxane) (PMHS) and N,N'-bis(3-allyl)pyromellitic diimide was optimized for O2/N2 separation. The membrane exhibits excellent mechanical and thermal properties and shows an O2/N2 selectivity of up to 4.44 with an O2 permeability of 31.0 Barrer; compared with polydimethylsiloxane (PDMS) and pure polyimide (PI) membranes, the separation selectivity shows a 107% increase for PDMS, and the permeatio ...[more]

PMID: 34368541

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