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Title: Amorphous fluorinated copolymer gas separation membranes

Abstract

Membranes having a permselective active layer of a copolymerized perfluorinated monomer and an non-fluorinated alkylvinylester monomer demonstrate superior selective permeability performance for separating gas mixtures compared to membranes of exclusively perfluorinated polymers. Preferred active layer compositions are copolymers of perfluoro-2,2-dimethyl-1,3 dioxole (PDD) copolymerized with an alkylvinyl ester such as vinyl acetate, and vinyl pivalate, and with alkylvinyl esters that are substantially hydrolyzed to provide copolymerized vinyl alcohol functionality. The membranes can have a thin, high diffusion rate, “gutter layer” of a fluorinated polymer highly permeable to nitrogen positioned between the active layer and a porous support layer. A novel copolymer effective in selectively permeable membranes is a copolymer of PDD and an alkylvinyl ester compound having the formula H2C═CHOC(O)R1 in which R1 is a linear or branched alkyl group of from 2 to 5 carbon atoms.

Inventors:
; ;
Issue Date:
Research Org.:
Compact Membrane Systems, Inc., Newport, DE (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1637783
Patent Number(s):
10596527
Application Number:
15/574,408
Assignee:
Compact Membrane Systems, Inc. (Newport, DE)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
DOE Contract Number:  
SC0011989
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/10/2016
Country of Publication:
United States
Language:
English

Citation Formats

Shangguan, Ning, Feiring, Andrew Edward, and Majumdar, Sudipto. Amorphous fluorinated copolymer gas separation membranes. United States: N. p., 2020. Web.
Shangguan, Ning, Feiring, Andrew Edward, & Majumdar, Sudipto. Amorphous fluorinated copolymer gas separation membranes. United States.
Shangguan, Ning, Feiring, Andrew Edward, and Majumdar, Sudipto. Tue . "Amorphous fluorinated copolymer gas separation membranes". United States. https://www.osti.gov/servlets/purl/1637783.
@article{osti_1637783,
title = {Amorphous fluorinated copolymer gas separation membranes},
author = {Shangguan, Ning and Feiring, Andrew Edward and Majumdar, Sudipto},
abstractNote = {Membranes having a permselective active layer of a copolymerized perfluorinated monomer and an non-fluorinated alkylvinylester monomer demonstrate superior selective permeability performance for separating gas mixtures compared to membranes of exclusively perfluorinated polymers. Preferred active layer compositions are copolymers of perfluoro-2,2-dimethyl-1,3 dioxole (PDD) copolymerized with an alkylvinyl ester such as vinyl acetate, and vinyl pivalate, and with alkylvinyl esters that are substantially hydrolyzed to provide copolymerized vinyl alcohol functionality. The membranes can have a thin, high diffusion rate, “gutter layer” of a fluorinated polymer highly permeable to nitrogen positioned between the active layer and a porous support layer. A novel copolymer effective in selectively permeable membranes is a copolymer of PDD and an alkylvinyl ester compound having the formula H2C═CHOC(O)R1 in which R1 is a linear or branched alkyl group of from 2 to 5 carbon atoms.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {3}
}

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