Influence of acetylation on the tensile properties, water absorption, and thermal stability of (High‐density polyethylene)/(soya powder)/(kenaf core) composites

Abstract

Composites comprising high-density polyethylene (HDPE)/(soya powder)/(kenaf core) were prepared by incorporating different loads of kenaf core powder into HDPE/(soya powder) composites with an internal mixer (Haake PolyLab) for 12 min at 1808C and 50 rpm. The composition of the soya powder used was soluble carbohydrates, 15%; insoluble carbohydrates, 15%; oil, 18%; protein, 38%; and moisture, ash, other, 14%. The effect of kenaf core acetylation on the properties of the HDPE/(soya powder)/(kenaf core) composites was investigated by using a water-absorption test, a tensile test, thermogravimetric analysis, Fourier-transform infrared spectroscopy, and field emission scanning electron microscopy (FESEM). The acetylation of the kenaf core caused a significant increase in the water resistance, thermal stability, and tensile properties of the composites. The FESEM results showed that better interaction occurred between acetylated kenaf core and HDPE relative to unmodified kenaf core.

Effects of natural weathering on the degradation of alkaline‐treated peanut shell filled recycled polypropylene composites

“…As shown in the figure, as the PSP loading increased, the tensile modulus of both composites also increased marginally. As stated earlier, the stiffness of composite materials can be increased with the presence of rigid filler particles in the soft matrix . Yet again, during comparison of the tensile modulus of both composites after 6 months of exposure to natural weathering, the treated composites showed a slightly higher tensile modulus than the untreated composites.…”

Effect of filler surface treatment on the properties of recycled high-density polyethylene/(natural rubber)/(Kenaf powder) biocomposites

“…Therefore, it increased their interfacial adhesion. Better adhesion led to more restriction of the deformation capacity of the matrix in the elastic zone and increased modulus .…”

The Effect of Alkaline Peroxide Pre-Treatment on Properties of Peanut Shell Powder Filled Recycled Polypropylene Composites

“…The presence of rigid filler particles in the soft matrix develops the stiffness of composite materials. 10,13,14 When comparing both composites, the treated composites had a slightly higher tensile modulus than the untreated composites. There are few factors that could have affected the tensile modulus of treated composites, such as aspect ratio and degree of molecular orientation.…”