Effect of ecofriendly coating and treatment on mechanical, thermal and morphological properties of sisal fibre

Sahu, Parul ; Gupta, M K


The objective of the present work is to overcome the limitations of sisal fibre and to improve its performance byecofriendly treatment (sodium bicarbonate) and ecofriendly coating [poly lactic acid (PLA)]. Mechanical, thermal, andmorphological analyses of untreated, treated and treated + coated sisal fibres have been carried out and compared. Sisalfibres are treated with varying concentrations of sodium bicarbonate (5, 10, 15 and 20 % w/v) at varying soaking timeperiods (24, 48, 72, 96 and 120 h). PLA coating on sisal fibres is performed at a varying PLA concentrations (2, 4, 6 and 8%w/v). Scanning electron microscope and X-ray diffraction have been used for the examination of morphological andcrystalline analysis respectively of untreated, treated and treated + coated sisal fibres. It is observed that the combined effectof treatment and coating leads to improvement in crystallinity, water absorption resistance, and mechanical and thermalproperties of sisal fibres.


Ecofriendly treatment;Mechanical properties;Polymer coating;Sisal fibre;Thermal properties;X-raydiffraction

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