In this study, the corn stalk (CS) had been utilized as natural filler in low density polyethylene (LDPE). The effect of CS
loading and coconut oil coupling agent (COCA) on tensile, thermal and water absorption properties of LDPE/CS composites
were investigated. The increases of CS decreased the tensile strength and elongation at break of LDPE/CS composites, but
increased in Young’s modulus. The incorporation of CS also contributed to high water uptake of LDPE/CS composites.
However, the presence of CS has increased the crystallinity of composites and LDPE matrix due to nucleating effect. The
addition of COCA has significantly increased the tensile strength, elongation at break, water resistivity and crystallinity
of LDPE/CS composites, but slightly reduced in Young’s modulus. The scanning electron microscope (SEM) also evidence
the presence of COCA improved the adhesion between CS and LDPE matrix.