Analysis of Macrostructure of Polymeric Materials

Anotace

This dissertation thesis “Analysis of macrostructure of polymeric materials” is divided into two main parts. The first of them gives a theoretical background, necessary for understanding the topic and content of the following chapters. The fundamental terms and definitions used in the experimental part are described from the point of acquisition the experimental data as well as their further processing and results interpretation. The focus of the work in the experimental part is concentrated on studying the structure of soft polyurethane foams, namely quantification of their structural (three-dimensional) characteristics – – pore size distribution and estimation of mean pore volume from the knowledge of sets of images representing planar cross sections (two-dimensional areas) through such a structure. Experimental data were captured employing the method of X-ray computed micro tomography and evaluated by means of two techniques. The former one was the image analysis method directly implemented in slice-reconstructing software, the latter one was based on Voronoi Tessellations.