| Abstrakt: |
Structure of polyethylene is the key factor affecting the properties of polyethylene. For high-density and linear low-density polyethylene, the choice of different comonomers and their content is crucial in determining the degree of branching in the polymer chains. In the formation of long-chain branching (LCB), an increase in comonomer content often leads to a decrease in the degree of LCB. This study conducted a comprehensive analysis of high-density polyethylene samples, namely D6095H, L6095-1, and L6095-2, produced by three domestic manufacturers. Various fundamental properties such as comonomer content, molecular weight distribution, thermal performance, mechanical properties, and microstructure were tested with respect to different comonomer contents. The results show that D6095H, with a slightly higher comonomer content, exhibits higher melt flow rate and branching degree compared to L6095-1 and L6095-2, but lower crystallinity. D6095H also has a broader molecular weight distribution, higher tensile stress than L6095-1 and L6095-2, while L6095-1 and L6095-2 exhibit higher impact strength. [ABSTRACT FROM AUTHOR] |
