USE AS ION-EXCHANGE MEMBRANES AND BATTERY SEPARATORS

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 1249
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1984
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
P.o. Box 7807, Austin, TX, 78712
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 DR. TIMOTHY J. JUHLKE
 DIRECTOR NEW PRODUCT DEV.
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
EXFLUOR RESEARCH CORPORATION ALONG WITH PROFESSOR RICHARD J. LAGOW AT THE UNIVERSITY OF TEXAS AT AUSTIN HAVE DEVELOPED A NEW SYNTHETIC METHOD FOR PREPARING FLUOROCARBON MEMBRANE MATERIAL. THE PROCEDURE CONSISTS OF FIRST SYNTHESIZING A HYDROCARBON PRECURSOR, INTRODUCING CROSS-LINKS AND THEN FLUORINATING WITH ELEMENTAL FLUORINE. THIS METHOD PERMITS WIDE FLEXIBILITY IN THE STRUCTURAL FEATURES OF THE MEMBRANE. WE HAVE PREPARED MEMBRANES WITH BOTH ISOLATED AND VICINAL CARBOXYLIC ACID FUNCTIONS BY THIS METHOD. IN THIS EXAMPLE A POLYETHYLENE MATRIX WITH THE APPROPRIATE FUNCTIONAL GROUPS WAS PREPARED, CROSS-LINKED WITH RADIATION AND FLUORINATED TO CONVERT C-H TO C-F BONDS. THE MEMBRANES OBTAINED FROM THIS PREPARATION AFTER HYDROLYSIS IN AQUEOUS ACID WERE SHOWN TO BE CONDUCTIVE. CONDUCTIVITIES OF 5 OHM/CM(1) HAVE ALREADY BEEN OBTAINED VALUES OF 3 OHM/CM(1) ARE THOUGHT TO BE READILY ATTAINABLE. THE SUCCESS OF THE "OXYFLUORINATION" PROCESS FOR MAKING FUNCTIONALIZED POLYMERS HAS ALREADY BEEN DEMONSTRATED IN PROFESSOR LAGOW'S ACADEMIC LABORATORY. USING FURTHER TECHNOLOGY DEVELOPED AT EXFLUOR RESEARCH CORPORATION, NEW CANDIDATES FOR ION-EXCHANGE MEMBRANES WILL BE EXAMINED. FILMS ALREADY PREPARED BY THIS METHOD HAVE BEEN SHOWN TO HAVE RESISTANCES OF LESS THAN 5 OHM-CM(2) AND ARE STABLE IN AGGRESIVE ENVIRONMENTS. THE DEGREE OF CROSS-LINKING WILL BE VARIED AND THE EFFECTS ON MEMBRANE PERFORMANCE WILL BE DETERMINED. ADDITIONAL ATTENTION WILL BE GIVEN TO THE FILM-FORMING CHARACTERISTICS OF THE FUNCTIONALIZED POLYMERS. BONDING PROPERTIES TO TEFLON WILL ALSO BE EXAMINED FOR USE IN INCREASING THE MECHANICAL STRENGTH OF THE POLYMER FILM.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government