Separation membrane and manufacturing method therefor
AssigneeToray Industries, Inc.
InventorsMarina Taguchi, Masayuki Hanakawa, Gohei Yamamura, Koichi Takada, Hiroki Eimura, Shigeru Aoyama, Miku Akutsu
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Abstract
A separation membrane has high strength and low leakage property while maintaining high gas permeability using poly(4-methyl-1-pentene) excellent in chemical resistance and gas permeability. The separation membrane contains poly(4-methyl-1-pentene) as a main component, in which a ratio RA of a rigid amorphous of poly(4-methyl-1-pentene) in the separation membrane is 43% or more and 60% or less, a porosity is 30% or more and 70% or less, and a dense layer is provided on at least one surface.
Claims18
A separation membrane containing poly(4-methyl-1-pentene) as a main component, in which a ratio RA of a rigid amorphous defined by Equation (1) of poly(4-methyl-1-pentene) in the separation membrane is 43% or more and 60% or less, overall porosity of the separation membrane is 30% or more and 70% or less, and
- a dense layer is provided on at least one surface side of the separation membrane,
- RA (%))=100−(MA+C) (1)
- wherein MA is a ratio of a movable amorphous, and C is crystallinity.
Dependencies are inferred from the claim text.