Tajudeen Mojisola | Federal University of Technology Akure (original) (raw)

Papers by Tajudeen Mojisola

In this study, an investigation was carried out on the effect of waste glass particles (WGP) (sie... more In this study, an investigation was carried out on the effect of waste glass particles (WGP) (sieved to -23 µm) with varying proportions of 2, 4, 6, 8, and 10 wt. % on the properties of Al-6061 alloy. The produced composite samples were subjected to various tests; density, porosity, tensile, impact, compression, and wear. The results showed that increasing the addition of waste glass led to a progressive reduction in density, elongation, strain, and impact energy as WGP increased from 0 to 10 wt. %. The Brinell hardness was observed to increase progressively from 0 to 10 wt. % of WGP. There was an enhancement of yield and ultimate tensile strength, peaking at an incorporation rate of 6 wt. % WGP after which the strength deteriorated. As in the case of yield and ultimate compressive strength, the maximum value was realized at 8 wt. % WGP addition while 10 wt. % led to a fall in strength. Analysis of wear performance revealed a lower wear rate at the lowest variables of applied load, ...

International Journal of Engineering Materials and Manufacture

In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP... more In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP) composite with treated GSP within the range of 10-30 wt% at 10 wt% has been achieved. The adopted technique used in the production of the composite is melt mixing and compounding using two roll mills with a compression moulding machine. Properties such as hardness, tensile strength, impact energy and water absorption analysis were examined. The result revealed that addition of GSP increases the hardness value from 22.3 to 87 Hv. However, the tensile strength progressively decreased as the GSP increases in the HDPE. This trend arises due to the interaction between neighbouring reinforced particulate which appears to influence the matrix flow, thereby inducing embrittlement of the polymer matrix. It was also observed that water absorption rate steadily increased with an increase in the exposure time and the absorbed amount of water increases by increasing the wt% of the GSP. Analysing th...

Minerals

In order to have a good understanding of the treatment process and improvement on the market valu... more In order to have a good understanding of the treatment process and improvement on the market value of ilmenite beach placer sands, knowledge of its mineral composition and phase distribution is fundamental. In this study, a combination of characterization techniques including high-resolution scanning electron microscopy (HR-SEM), high-resolution transmission electron (HR-TEM) microscope, and X-ray diffraction (XRD) techniques was used to understand the mineralogical characteristics of ilmenite beach placer sands obtained from Richards Bay, South Africa. The mineral phase constituents of the ilmenite beach placer sands were studied before pre-oxidation and additive leaching in a chloride environment. During observations using XRD and HR-SEM, the ilmenite beach placer sands exhibited signature rhombohedral crystal form and crescentic pits with evidence of alteration phases. The characterized pre-oxidized ilmenite showed the presence of a ferric oxide film deposit of the particles. The...

In this study, an investigation was carried out on the effect of waste glass particles (WGP) (sie... more In this study, an investigation was carried out on the effect of waste glass particles (WGP) (sieved to -23 µm) with varying proportions of 2, 4, 6, 8, and 10 wt. % on the properties of Al-6061 alloy. The produced composite samples were subjected to various tests; density, porosity, tensile, impact, compression, and wear. The results showed that increasing the addition of waste glass led to a progressive reduction in density, elongation, strain, and impact energy as WGP increased from 0 to 10 wt. %. The Brinell hardness was observed to increase progressively from 0 to 10 wt. % of WGP. There was an enhancement of yield and ultimate tensile strength, peaking at an incorporation rate of 6 wt. % WGP after which the strength deteriorated. As in the case of yield and ultimate compressive strength, the maximum value was realized at 8 wt. % WGP addition while 10 wt. % led to a fall in strength. Analysis of wear performance revealed a lower wear rate at the lowest variables of applied load, ...

International Journal of Engineering Materials and Manufacture

In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP... more In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP) composite with treated GSP within the range of 10-30 wt% at 10 wt% has been achieved. The adopted technique used in the production of the composite is melt mixing and compounding using two roll mills with a compression moulding machine. Properties such as hardness, tensile strength, impact energy and water absorption analysis were examined. The result revealed that addition of GSP increases the hardness value from 22.3 to 87 Hv. However, the tensile strength progressively decreased as the GSP increases in the HDPE. This trend arises due to the interaction between neighbouring reinforced particulate which appears to influence the matrix flow, thereby inducing embrittlement of the polymer matrix. It was also observed that water absorption rate steadily increased with an increase in the exposure time and the absorbed amount of water increases by increasing the wt% of the GSP. Analysing th...

Minerals

In order to have a good understanding of the treatment process and improvement on the market valu... more In order to have a good understanding of the treatment process and improvement on the market value of ilmenite beach placer sands, knowledge of its mineral composition and phase distribution is fundamental. In this study, a combination of characterization techniques including high-resolution scanning electron microscopy (HR-SEM), high-resolution transmission electron (HR-TEM) microscope, and X-ray diffraction (XRD) techniques was used to understand the mineralogical characteristics of ilmenite beach placer sands obtained from Richards Bay, South Africa. The mineral phase constituents of the ilmenite beach placer sands were studied before pre-oxidation and additive leaching in a chloride environment. During observations using XRD and HR-SEM, the ilmenite beach placer sands exhibited signature rhombohedral crystal form and crescentic pits with evidence of alteration phases. The characterized pre-oxidized ilmenite showed the presence of a ferric oxide film deposit of the particles. The...