Authors A.M. Alekseev, J. Loos
Month, Year 09, 2014 @en
Index UDC 53.086
Abstract There was the research of influence various conditions of measurement polymers to find optimum conditions for the definition of the local Young’s modulus this studied material. The experiment was carried out on the example of polycarbonate, polystyrene and polypropylene, with the using of the atomic force acoustic microscopy (AFAM). The peculiarities of AFAM measurements by probes with various values of a beam rigidity and also length and width of a cantilever are described. It was found that only probes parameters in a certain range can be used for measurement, since the application of too soft probes is complicated by low sensitivity to elastic surface properties. At the same time the using of too rigid probes leads to the destruction of polymeric samples and emergence of defects on their surface. The procedure of polymers measurement by AFAM method was proposed, involving the amplitude measurements and fluctuation frequency of a cantilever, as well as the distance between the probe and the test sample at each point of the surface.

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Keywords AFAM; Young’s modulus; polymers; cantilever.
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