The effects of filler particle size of poly(vinyl chloride)/chicken eggshell powder (PVC/ESP) composites on the processing, tensile properties, morphology and thermal degradation were investigated. The mixing of composites was done using Rheomix internal mixer. The processing torque of PVC/ESP composite at a particle of 0.2 μm exhibits lower processing torque compared to that at a particle size of 7 μm due to the dispersive resistance from larger ESP filler particles. Good interfacial adhesion exists between the filler and matrix in composites prepared via a filler particle size of 0.2 μm, which has improved the tensile strength and modulus of PVC/ESP composite compared to a filler particle size of 7 μm as justified from FESEM images on the tensile fracture surface of the composites. Thermogravimetric analysis results show that the filler particle size of 0.2 μm composite exhibits higher thermal stability compared to the filler particle size of 7 μm composite.
This paper investigates the effects of chemical modification of chicken eggshell powder (ESP) by silane coupling agent on the tensile, morphological, and thermal properties of high density polyethylene/chicken eggshell powder (HDPE/ESP) composites. The tensile and morphological properties of HDPE/ESP composites with and without chemical modifications have been characterized by a light weight tensile tester and scanning electron microscopy (SEM) under different ESP loading. The compounding of composites was done using Rheomix mixture to produce a homogenous mixture of ESP in HDPE. The processing torque is very dependent on the content of HDPE matrix resin. The thermal stability and thermal analysis of the composites were performed by thermogravimetric analysis and differential scanning calorimetric analysis (DSC). DSC result shows no significant differences on the melting and crystallization temperature of HDPE with and without chemical modification of ESP. Tensile strength and thermal stability of HDPE/ESP composites were improved with the modification of ESP by silane coupling agent. FTIR results show that ESP was successfully being modified and the silane coupling agent component is present in the composition. In the presence of silane coupling agent, the interfacial interaction and adhesion between HDPE and ESP were enhanced.
To cite this article: Sharmeeni Murugan and Yamuna Munusamy. (2019). Impact of weathering on the mechanical and weight reduction properties of high-density polyethylene (HDPE) composites filled with treated and untreated eggshell powder filler (ESP).
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