AQUEOUS PROCESS FOR PREPARING POLYAMIC ACIDS AND POLYAMIC ACID RELATED GEL MATERIALS
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United States of America
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Jan 9, 2025
app pub date -
Sep 12, 2024
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Sep 12, 2024
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Abstract
The present disclosure is directed to methods of forming polyamic acid, polyamic acid metal salt, and polyimide gels under aqueous conditions, the methods utilizing water-soluble carbonate or bicarbonate salts. These gels may be converted to aerogels or xerogels, which may further be converted to carbon aerogels or xerogels. Such carbon aerogels or xerogels have the same physical properties as carbon aerogels or xerogels prepared from polyimide aerogels obtained according to conventional methods, i.e., organic solvent-based methods.
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