Język Polski
English
Published
: 2022-09-01
Determination of hydroxyl groups in acetone environment as a result of the reaction with pyromellitic dianhydride, catalysed with 1-methylimidazole
Abstract
A quick and precise method of determination of organic hydroxyl groups content is presented. The method is based on hydroxyl groups acylation with pyromellitic dianhydride (DBPM) in acetone, catalyzed with 1-methylimidazole (MIA). Acylation occurs within 5 minutes at room temperature and the excess of DBPM is quickly hydrolyzed. This method is applicable for aliphatic hydroxyl groups determination in alcohols, polyesters and polyethers (Tables 1, 2 and 3). Phenolic and epoxy groups do not react in the reaction conditions. The precision of the method is as follows: repeatability (expressed as RSD(r)) 2 % and reproducibility (expressed as RSD(R)) 3 %.
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Gajewska, T., Kaszuba, A., Czuba, H., & Górecka, E. (2022). Determination of hydroxyl groups in acetone environment as a result of the reaction with pyromellitic dianhydride, catalysed with 1-methylimidazole. Polimery, 49(2), 128–131. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1734
