EXAMINING THE MECHANICAL PROPERTIES OF ANNEALED AND NOT ANNEALED MULTILAYER FILM (POLYETHYLENE/ POLYETHYLENE TEREPHTHALATE/ POLYETHYLENE) BY DYNAMIC MECHANICAL ANALYSIS (DMA)

Heat treatment process like Annealing is used to enhance mechanical and sometimes the chemical properties of the material. Thermal analysis techniques like DMA is used to elucidate Tg and some mechanical properties like strength, stiffness and damping behavior of the material. Performing DMA on annealed and not annealed samples of material with similar composition and examining some specific properties and analyzing them is the main idea involved in this paper. Furthermore, to inspect the morphology and surface finish of the given polymeric sample microscopy and visual inspection are performed.