Polyolefin composites filled with magnesium hydroxide

In this study, modified and non-modified composites of polypropylene (PP) and linear low-density polyethylene (LLDPE) filled with magnesium hydroxide (Mg(OH)(2))were investigated, and maleic acid anhydride-grafted PP or LLDPE (MAH-g-PP, or MAH-gLLDPE) were used as polymer modifiers. In the composites, when the LLDPE was partially replaced by MAH-g-LLDPE, the notched Izod impact strength, tensile strength, and flexural strength of the composites increased, while the modulus decreased. When the PP was partially replaced by MAH-g-PP, the tensile strength and flexural strength of the composites increased, and the impact strength and modulus changed slightly. The phase structure of the composites was characterized using scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA), and differential scanning calorimeter (DSC).