Thermally-rearranged polymer blends for gas separation membranes
Abstract
Polymer blends comprising an ortho-functionalized polyimide homo or copolymer and a polybenzimidazole homo or copolymer, wherein the ortho-functionalized polyimide thermally rearranges to a polymer comprising a phenylene heterocyclic group, such as, polybenzoxazole, polybenzothiazole, polybenzimidazole and/or other heterocyclic structure upon heating. Also disclosed are method of forming a polymer blend comprising dissolving an ortho-functionalized polyimide homo or copolymer and a polybenzimidazole homo or copolymer in a solvent, and optional compatibilizer, to form a polymer solution; contacting a support with the polymer solution; and evaporating the solvent to provide a thin layer comprising the polymer blend on the support. Further, methods of heat treating these polymer blends to thermally rearrange the disclosed polyimides are disclosed, as are the polymer blends prepared thereby. Methods of using these polymer blends to separate gases are also disclosed.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1987254
- Patent Number(s):
- 11613649
- Application Number:
- 17/044,540
- Assignee:
- The Board of Regents of the University of Texas System (Austin, TX)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- DOE Contract Number:
- FG02-02ER15362
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 04/02/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Freeman, Benny D., Paul, Donald R., and Moon, Joshua D. Thermally-rearranged polymer blends for gas separation membranes. United States: N. p., 2023.
Web.
Freeman, Benny D., Paul, Donald R., & Moon, Joshua D. Thermally-rearranged polymer blends for gas separation membranes. United States.
Freeman, Benny D., Paul, Donald R., and Moon, Joshua D. Tue .
"Thermally-rearranged polymer blends for gas separation membranes". United States. https://www.osti.gov/servlets/purl/1987254.
@article{osti_1987254,
title = {Thermally-rearranged polymer blends for gas separation membranes},
author = {Freeman, Benny D. and Paul, Donald R. and Moon, Joshua D.},
abstractNote = {Polymer blends comprising an ortho-functionalized polyimide homo or copolymer and a polybenzimidazole homo or copolymer, wherein the ortho-functionalized polyimide thermally rearranges to a polymer comprising a phenylene heterocyclic group, such as, polybenzoxazole, polybenzothiazole, polybenzimidazole and/or other heterocyclic structure upon heating. Also disclosed are method of forming a polymer blend comprising dissolving an ortho-functionalized polyimide homo or copolymer and a polybenzimidazole homo or copolymer in a solvent, and optional compatibilizer, to form a polymer solution; contacting a support with the polymer solution; and evaporating the solvent to provide a thin layer comprising the polymer blend on the support. Further, methods of heat treating these polymer blends to thermally rearrange the disclosed polyimides are disclosed, as are the polymer blends prepared thereby. Methods of using these polymer blends to separate gases are also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {3}
}
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