Heptene-functionalized graphitic nanoplatelets for high-performance composites of linear low-density polyethylene

Abstract Heptene-functionalized graphitic nanoplatelets (HGNs) were prepared as a new reinforcing additive for linear low-density polyethylene (LLDPE). HGNs were synthesized using a mechanochemical reaction between graphite and 1-heptene. The formation of HGNs is confirmed using a variety of analytic techniques. Because HGNs were well dispersible in organic solvents, HGN/LLDPE composites were easily prepared using a solution process. Compared to neat LLDPE, the HGN/LLDPE composites showed significantly enhanced mechanical properties (i.e., tensile strength, yield strength, Young's modulus, and tensile toughness) and thermal stability. Considering cost, efficiency, and practicality, HGNs could become promising candidates for reinforcing additives for LLDPE.