Study of the Correlations Between the Dynamics of Thermal Destruction and the Morphological Parameters of Biogenic Calcites by the Method of Thermoprogrammed Desorption Mass Spectrometry (TPD-MS)

By the method of thermoprogrammed mass spectrometry (TPD-MS) were studied the biogenic calcites thermal desorption spectra (natural limestone chalk, bird eggshells: chicken (Gallus gallus domesticus), domestic turkey (Meleagris gallopavo), domestic geese (Anser anser domesticus), domestic duck (Cairina moschata), mollusk shells (Anadara inaequivalvis), and cephalopod fossils Belemnite (Pachyteuthis Bayle), as well as calcite nanoparticles. It was shown that the structure of the spectrum correlates with morphological parameters and is a function of samples dispersity degree of biogenic calcites. The increase in the content of nano-, ultra- and microdispersed components in calcite-based biocomposites leads to a significant change in the form of the thermal desorption spectrum, manifested in the appearance of additional temperature desorption areas (peaks) in thermograms and their displacement to lower temperatures area.