Home – Home – Jornals – Chemistry for Sustainable Development 2021 number 2

Laboratory set-up was developed on the basis of Reokinetika stand for the static and dynamic determination of the elastic modulus. Static and dynamic tests of polyvinyl alcohol cryogels were carried out, and the dependences of the output signals of force sensors on sample deformation were obtained. Dynamic measurements were made using a device with piezoceramic force sensor and an electromechanical source of mechanical oscillations. Laboratory balance was used as a force sensor in static measurements. Sample deformation was set with a micrometer. The absolute values of the static elastic modulus are obtained. A linear correlation of the results of static and dynamic measurements is demonstrated. The ratio of the slopes of the considered dependences is equal to the ratio of the absolute values of static and dynamic elasticity modules of the samples.