Authors
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Lappan, U. ; Geißler, U.
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Title
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PTFE micropowder functionalized with carboxylic acid groups
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Date
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01.07.2008
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Number
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15853
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Abstract
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PTFE powder irradiated in air at room temperature was studied by infrared spectroscopy, potentiometric titration with sodium hydroxide, and polyelectrolyte titration with poly(diallyl dimethylammonium chloride). Through the radiation-induced degradation COF groups are formed in the material, which can be hydrolyzed to COOH groups. About 10-20% of the COOH groups are located at the surface of the PTFE particle. The COOH groups start to decompose under oxidizing conditions at temperatures above 200 °C. The decarboxylation results in the formation of CFCF2 groups, which are oxidized to COF groups in the presence of air.
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Publisher
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Macromolecular Materials and Engineering
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Wikidata
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Citation
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Macromolecular Materials and Engineering 293 (2008) 538-542
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DOI
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https://doi.org/10.1002/mame.200800022
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Tags
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