Open AccessИсследование особенностей формирования пленок воды на поверхности монтмориллонита и каолинита методом инфракрасной спектроскопии
Author(s) -
Tatiazdracheva,
А.В. Кухарский,
Anton Kasprzhitskii,
Г. И. Лазоренко,
В.А. Явна,
А. Г. Кочур
Publication year - 2021
Publication title -
optika i spektroskopiâ
Language(s) - English
Resource type - Journals
eISSN - 2782-6694
pISSN - 0030-4034
DOI - 10.21883/os.2021.02.50563.220-20
Subject(s) - montmorillonite , attenuated total reflection , kaolinite , fourier transform infrared spectroscopy , infrared spectroscopy , absorbance , clay minerals , spectroscopy , analytical chemistry (journal) , chemistry , infrared , mineralogy , spectral line , materials science , environmental chemistry , optics , chromatography , physics , organic chemistry , quantum mechanics , astronomy
Kaolinite (KGa-1b) and montmorillonite (STx-1b) reference samples were studied by infrared spectroscopy at various water contents. The spectral features reflecting the formation of water layers on the basal surfaces of individual minerals have been studied. Experimental studies were carried out by the Attenuated Total Reflection (ATR) Fourier Transform Infrared (FTIR) spectroscopy. The analysis of the composition of the wet samples was carried out by decomposing the experimental spectra into the spectrum of H2O and minerals in the air-dry condition. The obtained dependences of the participation coefficients of the basic spectra on humidity are compared with the results of measurements in the microwave range and make it possible to investigate the integral features of the formation of a water layer on mineral particles and to predict the plasticity of clays. The anomalous position of the maximum and the half-width of the stretching vibrational modes of water molecules at low water content have been established.