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The purpose of this study is to investigate starch mucor (SM) in potassium iodide (KI) as corrosion inhibitor of aluminium in hydrochloric acid (HCl) medium.

The SM in KI was characterized by gravimetric, scanning electron microscopy, electrochemical impedance spectroscopy measurements, potentiodynamic polarization and gas chromatography-mass spectrometer techniques. The inhibition efficiency was optimized using response surface methodology.

The result revealed that the inhibitor inhibited corrosion at a low concentration with the rate of inhibition increasing as the concentration of the inhibitor increased. The inhibition efficiency increases as the temperature was increased with slight incorporation of the inhibitor (SM in KI). This indicates that the corrosion control is both inhibitor (SM in KI) and temperature dependent.

The research results can provide the basis for using SM in KI as corrosion inhibitor of aluminium in HCL medium. Mixed-type inhibitor nature of SM was proved by cathodic and anodic nature of the polarization curves.

The impact of potassium permanganate (KMnO₄) treatment on the tensile strength of an alkali-treated pineapple leaf fiber (PALF) reinforced with tapioca-based bio resin (cassava starch) was studied.

The PALF was exposed to sodium hydroxide (NaOH) treatment in varying concentrations of 2.0, 3.7, 4.5 and 5.5g prior to the fiber treatment with KMnO₄. The treated and untreated PALFs were reinforced with tapioca-based bio resin. Subsequently, they were subjected to Fourier transform infrared (FTIR) and tensile test analysis.

The FTIR analysis of untreated PALF revealed the presence of O-H stretch, N-H stretch, C=O stretch, C=O stretch and H-C-H bond. The tensile test result confirmed the highest tensile strength of 35N from fiber that was reinforced with 32.5g of cassava starch and treated with 1.1g of KMnO₄. In comparison, the lowest tensile strength of 15N was recorded for fiber reinforced with 32.5g of cassava starch without KMnO₄ treatment.

Based on the results, it could be deduced that despite the enhancement of bioresin (cassava starch) towards strength-impacting on the fibers, KMnO₄ treatment on PALF is very vital for improved tensile strength of the fiber when compared to untreated fibers. Hence, KMnO₄ treatment on alkali-treated natural fibers preceding reinforcement is imperative for bio-based fibers.

The overall aim of this research is to interpret Ikenga and Ofo creativity as it is revered in Igbo societies. Igbo creativity, especially interpreted through material culture, suffers the threat of extinction resulting from the forces of modernity. Forces of modernisation, which appear in the personae of Christianity, education, urbanisation and industrialisation, denigrated indigenous creativity, brandishing them as devious, fetish and primitive. Ironically, in most cases, the drivers of such narratives keep these “fetish” items in their museums and will give a lot to preserve them.

This study centred mostly on several communities in the Nsukka area of Igboland, Nigeria. It relied on both primary and secondary sources of historical enquiry. This qualitative research discussed the nuances of the subject matter as it relates to Igbo cosmos. These approaches involved visiting the study area and conducting personal interviews.

Archaeologists do often rely on material culture to study, periodise and date past human societies. In this study, it is found that material culture, an expression of indigenous creativity, best interprets how society survived or related with their environment. This paper examined two Igbo sculpted artefacts – Ikenga and Ofo – while unearthing the intricacies in Igbo cosmology as regards creativity, spirituality and society.

The shapes, motifs, patterns and designs depict an imaginary history, the intellectualism of the past and even the present. This serves as an objective alternative to the twisted colonial narrative on Igbo material culture and consequently contribute to ongoing efforts to preserve, protect and promote cultural heritage resources in this part of the world.