Browsing by Author "Mohammed Kayode Adebayo"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Eggshell nanoparticle reinforced recycled low-density polyethylene: A new material for automobile application
    (Elsevier, 2021-05-07) Sefiu Adekunle Bello; Nasirudeen Kolawole Raji; Maruf Yinka Kolawole; Mohammed Kayode Adebayo; Jeleel Adekunle Adebisi; Kehinde Adekunle Okunola; Mustekeem Olanrewaju AbdulSalaam
  • Thumbnail Image
    Item
    Influence of thermal ageing on the microstructural and mechanical characteristics of banana stem particles reinforced aluminium-alloy matrix composites
    (2024) Sefiu Adekunle Bello; Abdul Ganiyu Funsho Alabi; Suleiman Danjuman Daudu; Stephen Durowaye; Mohammed Kayode Adebayo; Luqman Babatunde Eleburuike; Sikiru Ottan Abdulraman; Shuaib Ajibola Mohammed
    The influence of thermal ageing on the microstructural and mechanical characteristics of banana stem particles (BSp) reinforced aluminium-alloy matrix composites was investigated. Sand casting was used to produce the composites, comprising aluminium alloy matrix reinforced with BSp of varying weight ratio of 0 wt. %, 1 wt. %, 3 wt. %, 4 wt. %, 5 wt. % and 6 wt. % were thoroughly mixed. Test samples for mechanical characterisation were prepared from the sand cast (6 mm diameter by 125 mm rods for tensile test). Thermal ageing was done for 2 hours (hrs) at 350 0C. The composites were evaluated for tensile, modulus of elasticity, hardness, and microstructural characteristics. The thermally aged samples demonstrated greater tensile strength and toughness as the concentration of BSp increased up to 5 wt. % in the composite in comparison with the as-cast samples. The greatest characteristics were demonstrated at 5 wt. % BSp concentration. Lower hardness was demonstrated by the as-cast samples in comparison with the aged-hardened samples. There was 5 wt. % BSp concentration in the alloy enhanced thermal ageing. These indicate that greater mechanical characteristics of the composites can be obtained by thermal ageing.
  • Thumbnail Image
    Item
    Sustainable hybrid nanoparticle reinforced low‑density polyethylene: emerging materials for engineering applications
    (Springer, 2024-05-15) Sefiu Adekunle Bello; Mohammed Kayode Adebayo; Raphael Gboyega Adeyemo; Patricia Abimbola Popoola
    Nanoparticles are materials that have diameter/dimension between 1 and 100 nm. The term also covers materials as high as 500 nm in diameter or length. Their emergence has given birth to a new set of nanocomposites with more promising properties than the conventional composites. Moreover, polyethylene products generate wastes. Their managements can create wealth and reduce dependence on the virgin polyethylene for green material productions. In this study, Delonix regia pod and eggshell hybrid nanoparticles, up to 12% (by wt), were incorporated into the low-density polyethylene. Properties of the developed hybrid nanocomposites were investigated and compared with those of the existing automobile dashboard cover material properties in literature. Results obtained from mechanical examinations show 332.77, 179.19, 807.32, 63.61, 4.33, 26.61 and 21.35% increases in tensile strength, percentage elongation, tensile modulus, flexural strength, flexural deflection, flexural energy absorbed and hardness, respectively; with consequent reductions in the flexural modulus and impact energy by respective 4.67 and 4.40% at 4% Delonix regia pod, 6% eggshell particles addition to the virgin low density polyethylene. Maximum impact energy of 25.09 J equal to 16.48% increase was noticed at 4% Delonix regia pod 4% eggshell particle addition to the recycled low-density polyethylene. Virgin low-density polyethylene containing 4% Delonix regia pod, 6% eggshell particles having greater tensile strength and impact energy than each of the existing materials for the automobile dashboard cover is confirmed suitable for both upper and lower layers of the dashboard cover. Hence, 4% Delonix regia pod 6% eggshell particles reinforced virgin low-density polyethylene has 28.39 ± 1.42 Nmm−2 tensile strength; 1137.42 ± 15 Nmm−2 tensile modulus; 6.24 ± 0.68% tensile elongation; 21.86 ± 0.9 J impact energy; 69.17 ± 3.51 VHN hardness value; 28.11 ± 0.84 Nmm−2 flexural strength; 7.42 ± 0.8 flexural deformation; 314.41 ± 20.53 Nmm−2 flexural modulus and 0.30 J flexural energy.