Water absorption and mechanical properties of high – density polyethylene/ egg shell composite


In this research, the water absorption and mechanical properties of (high-density polyethylene /egg shell) composites as a function of egg shell powder weight content in the grain size (75,125 μm) were investigated. Polymer composite was fabricated by mixing (HDPE) with (5, 10, 15, 20, 25) wt.% of egg shell powder to obtain desirable properties. The parameters such as tensile strength, tensile modulus, elongation at break and impact test were carried out on the prepared samples. It was found that the addition of egg shell powder to the polymer leads to decrease the tensile strength, modulus of elasticity, shore-D hardness on other hand it increases the % elongation at break, and for the impact strength. Water absorption of the composites behaviours as function of days has also been investigated, and it increases by increasing exposure time for the same filler content, while the absorbed amount of water increases, by increasing the wt.% of egg shell constant exposure time.