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Citation: Zheng Guodong, Zhuo Xiaoguang, Zhou Enle, Gao Feng, Xu Jiping. STUDY ON POLYMERIC MEMBRANES FOR OXYGEN ENRICHMENT Ⅲ.MEMBRANE-FCRMATION AND OXYGEN NITROGEN PERMS ELECETIVITY OF CROSSLNKED COPOLYMERS OF ORGANOSLOXANE[J]. Chinese Journal of Applied Chemistry, ;1987, 4(6): 69-72. shu

STUDY ON POLYMERIC MEMBRANES FOR OXYGEN ENRICHMENT Ⅲ.MEMBRANE-FCRMATION AND OXYGEN NITROGEN PERMS ELECETIVITY OF CROSSLNKED COPOLYMERS OF ORGANOSLOXANE

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Corresponding author: Zheng Guodong,
Received Date: 6 February 1987
Available Online: 23 April 1987

The performance of crosslinked copolymer of organosioxane (CGC) in forming homogeneous and composite membranes was studied. It is found that the CGC possesses outstanding membrane-forming properties and the surface texture of the homogeneous membrane is more fine. A pinhole free ultrathin membrane with thickness of 230-250 Å was prepared by spreading on water. The CGC, as a polymeric surfactant, can markedly improve the.mombraneformation of such polyolefins as poly-4-methylpentene-1, polybutadiene etc.With polydime-thylsiloxane segment ranging from 60 to 70 Wt% the homogenteous membrane gave PO₂ value of 2.5-2.7×10^-8cm³ (STP)-cm/cm²·s·cm Hg and α_o2/N2 of 2.2-2.3. The composite membrane obtained by laminating CGC and modified poly-4-methylpentene-1 ultrathin membra nesalternately on Celgard 2400, showed permselectivity for oxygen/nitrogen, J_o2=3.43×10^-4cm³/cm²·s·cmHg, and α_o2/N2=2.52.
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