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Accession Number:
ADA361108
Title:
The Use of Thermal Analysis in the Characterization of a Polymer Surface
Descriptive Note:
Final rept.
Corporate Author:
ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET WEAPONS LAB
Report Date:
1999-03-01
Pagination or Media Count:
15.0
Abstract:
Fuel cells are electrochemical systems that convert hydrogen into electricity without combustion. A proton exchange membrane PEM fuel cell power system consists of a polymer membrane, finely disbursed catalyst, and a gas humidifying system. Thermogravimetry TGA and differential scanning calorimetry DSC are powerful tools that can be used to characterize the physical properties of a polymer membrane. Ion chromatography can monitor the presence of contaminating ions in the aqueous condensate. TGA can easily measure the distribution of metal atalysts on a polymer surface due to the much lower decomposition temperature of the polymer. DSC can be used to measure the concentration of Teflon in a polymer blend by measuring the melting energy.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE