Abstract
The dynamics of the geometric parameters of droplets of a water-ethanol solution suspended on polypropylene filaments was investigated using high-speed microphotography. It was found that all suspended droplets had a spherical shape during the main time of evaporation. The higher the concentration of ethanol in the drop, the faster the droplet evaporates. The dynamics of the temperature of droplets of a water-ethanol solution suspended on polypropylene filaments was investigated using the method of infrared thermography. Three stages of temperature change of evaporating droplets of a water-ethanol solution were found. At the initial stage of evaporation, the droplet temperature changed like the temperature of an ethanol droplet, and then its behavior was similar to the temperature change of water droplets. The higher was the ethanol concentration in the droplet, the more similar was the temperature change with a change in the ethanol droplet temperature.
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