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Colorimetric Determination of Triacetin in Polymer-Composites
(2012) Mostovojus, V.; Tucinskas, G.; Ramanaviciene, A.; Öztekin, Y.; Ramanavicius, A.
Here proposed method enables the determination of triacetin concentrations in non-cured as well as fully cured air-filters and align the results obtained by gravimetric measurements. This method is relatively fast and accurate and it is based on colorimetric determination of triacetin esters converted to hydroxamic acid, which forms purple-red complexes with ferric ion. This reaction is widely used in the determination of various esters for a long time. Practical applicability of this method was demonstrated by triacetin determination in air-filters with limit of determination of 1.2*10-4 M. The experimental data showed linear relationship of calibration curve from solution concentrations in the range from 1.2*10-4 M to 1.2*10-3 M. This method is suitable for the accurate determination of triacetin concentrations during and after the production of filters without the application of expensive equipment. We believe that this method has real potential for the practical application. © 2012 American Scientific Publishers All rights reserved.