Методом оптической спектроскопии (УФ, видимая и ИК области спектра) исследованы две суспензии: вазелиновое масло (ВМ) наполненное слюдой и BaSO различной концентрации. Разработанный метод основан на анализе рассеивающей компоненты электромагнитного излучения, проходящего через образец, позволяющий определить средний размер и распределение рассеивающих частиц по размерам. Установлено, что с увеличением концентрации наполнителя частицы агрегируют, вследствие чего средний размер частиц увеличивается. Результаты, полученные спектроскопическим методом, хорошо согласуются с данными оптической микроскопии.
Two suspensions were studied by optical spectroscopy (UV, visible, and IR): vaseline oil (VM) filled with mica and BaSO of different concentrations. The developed method is based on the analysis of the scattering component of electromagnetic radiation passing through the sample, which makes it possible to determine the average size and size distribution of scattering particles. It was found that with increasing filler concentration, the particles aggregate, resulting in an increase in the average particle size. The results obtained by the spectroscopic method are in good agreement with the optical microscopy data.
В работе предложен новый спектроскопический метод оценки анизометрии и ориентации рассевающих частиц (пор или частиц наполнителя) внутри полимерной матрицы путем построения угловых зависимостей интенсивности рассеянного света. На примере полимерных материалов с различной геометрической формой рассеивающих частиц (частицы наполнителя и поры сферической и вытянутой форм) построены угловые зависимости интенсивности рассеянного света, отражающие геометрическую форму усредненной рассеивающей частицы.
A new spectroscopic method is proposed for assessing the anisometry and orientation of scattering particles (pores or filler particles) inside a polymer matrix by constructing angular dependences of the scattered light intensity. On the example of polymeric materials with different geometric shapes of scattering particles (filler particles and pores of spherical and elongated shapes), angular dependences of the scattered light intensity are constructed, which reflect the geometric shape of the averaged scattering particle.
The morphology of track membranes based on polyethylene terephthalate and polypropylene with different track diameters and their surface densities were studied by UV, IR, Raman spectroscopy, and scanning electron microscopy (SEM). The SEM method was used to plot the distribution curves of the number of tracks depending on their average size (diameter). Similar distribution curves were obtained using UV and IR spectroscopy. Good agreement was found between the data of independent methods of optical spectroscopy
and SEM. It is shown that with an increase in the surface density of tracks, the background elastic scattering in the Raman spectra increases linearly. It is proposed to use the observed effect in the Raman spectra to estimate the surface track density of polymer track membranes.
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