The impact of potassium permanganate (KMnO4) treatment on the tensile strength of pineapple leaf fiber reinforced with tapioca-based bio resin

Uchenna Luvia Ezeamaku, Chinyere Ezekannagha, Ochiagha I. Eze, Nkiru Odimegwu, Angela Nwakaudu, Amarachukwu Okafor, Innocent Ekuma and Okechukwu Dominic Onukwuli

Arab Gulf Journal of Scientific Research, 2022, vol. 41, issue 3, 416-426

Abstract: Purpose - 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. Design/methodology/approach - 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. Findings - 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 KMnO4treatment. Originality/value - Based on the results, it could be deduced that despite the enhancement of bioresin (cassava starch) towards strength-impacting on the fibers, KMnO4treatment on PALF is very vital for improved tensile strength of the fiber when compared to untreated fibers. Hence, KMnO4treatment on alkali-treated natural fibers preceding reinforcement is imperative for bio-based fibers.

Keywords: Pineapple leaf fiber; Tapioca-based bioresin; Potassium permanganate; Reinforcement; Chemical treatment; Tensile strength (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eme:agjsrp:agjsr-09-2022-0185

DOI: 10.1108/AGJSR-09-2022-0185

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