Determination of Optimal Modes for Measuring the Size of Colloidal Particles by Photon-Correlation Spectroscopy and Acoustic Spectroscopy

Abstract

В данной работе представлены результаты измерения размера коллоидных частиц SiO двумя методами - фотонно-корреляционной спектроскопией динамического рассеяния света и акустической спектроскопией. Математическая обработка экспериментальных данных с помощью программного обеспечения спектрометров «Photocor-Complex» и «DT-1202» позволила получить гистограммы распределения по размерам коллоидных частиц диоксида кремния в стандартном образце. Впервые установлено, что оптимальными параметрами для измерения размера коллоидных частиц SiO методом фотонно-корреляционной спектроскопии являются концентрация вещества менее 1 %, угол положения фотодетектора 90° и количество измерений в цикле 50 - 100, а акустической спектроскопии - концентрация 1 %. This paper presents the results of measuring the size of colloidal SiO particles by two methods - photon-correlation spectroscopy of dynamic light scattering and acoustic spectroscopy. Mathematical processing of experimental data using the software of the Photocor-Complex and DT-1202 spectrometers made it possible to obtain of the size distribution histograms for silicon dioxide colloidal particles in a standard sample. For the first time it has been established that the optimal parameters for measuring the size of colloidal SiO particles by the photon-correlation spectroscopy are the substance concentration less than 1 %, the photodetector position angle of 90 degrees and the number of measurements in a cycle of 100 -150, and for the acoustic spectroscopy - 1 % substance concentration.

Study of Wound-Healing Ointment Composition based on Highly Dispersed Zinc Oxide Modified with Nanoscale Silver

“…The step-by-step process of synthesis of highly dispersed Zinc oxide is presented in the work of Blinov et al The resulting ointment composition is an odorless white or yellow ointment, homogeneous inconsistency, and having a neutral reaction of the medium. One of the most promising and modern methods of studying the rheological and Physico-chemical properties of ointment compositions is acoustic and electroacoustic spectroscopy [42][43][44]. The method is based on the measurement of the attenuation spectrum of an ultrasonic wave in a dispersed system and the subsequent mathematical processing of experimental data.…”