“…The main effort has been developed in the field of mechanical properties mostly represented by elastic modulus and strength. A lot of published relationships between porosity and mechanical properties have been proposed for one-component materials in the form of linear [1-3, 6-8, 12, 15], exponential [1,2,7,8,10], power [1, 2, 5, 7-9, 11, 13, 14, 16-18] and logarithmic functions [15]. The effect of porosity in one-component polymeric materials is well examined issue.…”