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Fourier Transform Infrared (FTIR) Spectroscopy Study on Coir Fibre Reinforced Polyester (CFRP) Composites( Vol-2,Issue-3,May 2016 )


Chukwunyelu Christian Ebele, Metu Chidiebere S., Ojukwu Martin C.


coir, fillers, flexural strength, hardness strength, composites.


Coir fibres can be used as fillers in synthetic polymer composites replacing expensive and non-biodegradable inorganic fillers. Coir fibres were chemically modified with sodium hydroxide and potassium permanganate to enhance their compatibility with the hydrophobic polymer matrix. Both untreated coir fibre reinforced polyester (CFRP) and treated coir fibre reinforced polyester (CFRP) composites that were characterised using FTIR show spectra with well-defined peaks at 1124.54, 1070.53 and 1041.60〖cm〗^(-1) for untreated CFRP and 1068.60〖cm〗^(-1) for treated CFRP (attributed to the amines groups C-N stretch), indicating that amines groups were introduced more to Untreated CFRP than treated CFRP. By way of Comparison, untreated CFRP composite exhibited higher mechanical properties. Based on mechanical properties data, Untreated CFRP shows higher optimum set of mechanical properties (flexural strength of 77.3〖N/mm〗^2, and hardness strength of 11.7〖N/mm〗^2 ) that were closely comparable with treated CFRP (flexural strength of 75.1〖N/mm〗^2, hardness strength of 11.6〖N/mm〗^2).

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