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}
}