Evaluation of the thermal, mechanical and dynamic mechanical characteristics of modified graphite nanoplatelets and graphene oxide high-density polyethylene composites

摘要: Abstract The effectiveness of graphitic nanoplatelets (GNPs) and graphene oxide (GO) as reinforcing fillers in a high-density polyethylene (HDPE) matrix was evaluated based on morphological, tensile, dynamic mechanical, thermal property improvements over the neat polymer. Simple melt compounding injection moulding were used for sample fabrication. Filler loadings ranged from 0.1% to 10% GNP, 0.05%–1.5% GO. Improvements mechanical properties observed both composites all investigated filler loadings, though more pronounced GNP composites, which saw 56% increase elastic modulus 23% maximum stress HDPE composite. A slight crystallization temperature while similar drop melting point recorded systems. SEM imaging revealed that agglomeration present dispersion better GNP/HDPE composites.