Production of permeable cellulose triacetate membranes
Abstract
A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.
- Inventors:
-
- Bend, OR
- Issue Date:
- Research Org.:
- Bend Research Inc
- OSTI Identifier:
- 866087
- Patent Number(s):
- 4631157
- Assignee:
- Bend Research, Inc. (Bend, OR)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- DOE Contract Number:
- AC06-79ER10337
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- production; permeable; cellulose; triacetate; membranes; phase; inversion; process; preparation; cta; regenerated; disclosed; useful; supports; liquid; facilitated; transport; processes; microfiltration; dialysis; ultrafiltration; ion-selective; electrodes; comprises; steps; preparing; casting; solution; solvent; comprising; mixture; cyclohexanone; methylene; chloride; film; immersing; cast; methanol; bath; resulting; membrane; hydrolyzed; conventional; techniques; process comprises; liquid membrane; conventional techniques; casting solution; phase inversion; cellulose triacetate; methylene chloride; facilitated transport; liquid membranes; solvent comprising; transport process; inversion process; /264/
Citation Formats
Johnson, Bruce M. Production of permeable cellulose triacetate membranes. United States: N. p., 1986.
Web.
Johnson, Bruce M. Production of permeable cellulose triacetate membranes. United States.
Johnson, Bruce M. Wed .
"Production of permeable cellulose triacetate membranes". United States. https://www.osti.gov/servlets/purl/866087.
@article{osti_866087,
title = {Production of permeable cellulose triacetate membranes},
author = {Johnson, Bruce M},
abstractNote = {A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}
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