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Effect of soaking temperature on the tensile and morphological properties of banana stem fibre-reinforced polyester composite

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Abstract

In this work, NaOH was used in modification of Banana stem fibre (BSF). Random matted BSF reinforced polyester composites were produced using hand layup moulding technique. The results of the tensile strength test on the composites fabricated with 30% mass fraction of BSF fibres treated under the temperatures of 30 °C, 45 °C, 60 °C, 75 °C and 90 °C were studied. Surface modification of the BSF with 30 °C showed slight improvement in the tensile strength from 17.39 to 18.05 MPa and increase in the tensile modulus from 1149.35 to 3519.65 N/mm2 as compared to the untreated fibres. Variation in properties due to treatment temperature was observed to show a higher value of properties at the 30 °C than at 45 °C, 60 °C, 75 °C and 90 °C treatment temperatures. The result of scanning electron microscopy micrographs of the surfaces of the fibres indicated an improvement in adhesion of the fibres with the resin, which was as a result of the reduction of the hygroscopic nature of the fibres from the surface treatment, which resulted in its higher tensile strength. Thermogravimetric analysis/differential thermogravimetric analysis also showed that the treatment enhanced the thermal stability of the composite.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Alex Ekwueme Federal University Ndufu Alike, Abakaliki, Ebonyi State, Nigeria

    K. J. Okafor

  2. Department of Mechanical Engineering, University of Nigeria, Nsukka, Nigeria

    S. O. Edelugo & S. A. Chukwunwike

  3. Department of Materials and Metallurgical Engineering, University of Nigeria, Nsukka, Nigeria

    I. C. Ezema Ike-Eze

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  1. K. J. Okafor
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  2. S. O. Edelugo
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  3. I. C. Ezema Ike-Eze
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  4. S. A. Chukwunwike
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Correspondence to K. J. Okafor.

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Okafor, K.J., Edelugo, S.O., Ezema Ike-Eze, I.C. et al. Effect of soaking temperature on the tensile and morphological properties of banana stem fibre-reinforced polyester composite. Polym. Bull. 78, 5243–5254 (2021). https://doi.org/10.1007/s00289-020-03374-2

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  • DOI: https://doi.org/10.1007/s00289-020-03374-2

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