A differential scanning calorimetric method for measuring the purity of thermally stable monomers used to manufacture aramid threads with a distinctly defined melting point is described. The thermal regimes for analyzing various organic substances are developed. A method for calculating the absolute amount of impurities using thermograms is proposed. It is based on plots of the fraction of melted sample as a function of melting point. A stepwise procedure for measuring the purity for practical utilization is developed. Examples of the calculation of the purity of various substances are given.
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Translated from Khimicheskie Volokna, No. 4, pp. 58-61, July—August, 2014.
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Shraifel’, A.S., Komissarov, S.V. & Sklyarova, G.B. Purity of Monomers for Manufacturing Aramid Fibers Measured by Differential Scanning Calorimetry. Fibre Chem 46, 262–265 (2014). https://doi.org/10.1007/s10692-014-9602-9
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DOI: https://doi.org/10.1007/s10692-014-9602-9