Abstract
Cellulose is being derivatized to change its properties and improve usability for special purposes. Its esters with phthalic acid, citric acid, maleic acid, and nitric acid were examined with analytical pyrolysis and thermally assisted hydrolysis and methylation using tetramethylammonium hydroxide. With traditional analytical pyrolysis the free acid or an anhydrous and decarboxylated thermally stable form could be proved in organic cellulose esters with a low degree of substitution, whereas for the high substituted cellulose nitrate also completely new products were produced through this method. Using thermally assisted hydrolysis and methylation the sensitivity of the method could be improved especially for cellulose derivatives with a low degree of substitution and characteristic products could be identified for most samples.
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