Effect Of Surface Treatment On Pineapple Leaf Fibre (PALF) And Its Composite

Razid, Nor Atirah (2019) Effect Of Surface Treatment On Pineapple Leaf Fibre (PALF) And Its Composite. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The aim of this study is to evaluate the effect of the surface treatment on the pineapple leaf fibre (PALF) and its composite. PALF were treated using three different condition which is alkaline, saline and combination of alkaline and saline. Alkaline treatment were carried out with two different soaking time which at 1 hour and 3 hour at concentration of 3, 5, 6 and 9 (w/v. %). While, saline treatment was carried out at 1, 2 and 5 w/v % at 3 hour soaking time. The physical, chemical, mechanical and morphological changes of the untreated and treated PALF were analysed by density measuring, Fourier Transform Infrared Spectrometry (FTIR), Scanning Electron Microscopy (SEM) and single fibre testing. The FTIR spectra confirmed that alkaline treatment removed lignin and hemicellulose. The FTIR confirmed that coupling of treatment indicated the present of organosaline agent at the wavelength 893cm-1. Alkaline treated PALF has highest the value of density. The Weibull analysis of the tensile strength (σo) indicated the optimum treatment alkaline treatment is at 5 wt. % for 1 hours (σo = 383.78 MPa) and 5 w/v. % saline concentration (σo = 400.42MPa). The combination of alkaline and saline treatment improve their strength with σo = to 492.95 MPa. The fibre treatment improve the strength of the PALF/PLA composite from 29.64 MPa to to 40.80 MPa and 40.46 MPa subsequently. However it was notice that combination the alkaline and saline reduced their strength to 29.12, probability due to damage of the fibre resulting from acidic condition in saline treatment. The composite failed due to the fibre fracture with some evident of matrix onto the fibre surface suggesting good bonding between the matrix/ fibre interface due to surface treatment. Combination of alkaline and saline treatment has significantly reduce the tensile strength, possibility due to damage of the fibre from the surface treatment.

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