Abstract
Cattail is an aquatic perennial with upright, flat, rhizomatous leaves that can grow to heights of 2.5 to 5 m and looks capable of filling this need. The main objective of this research was to separate and individualize the fibres by partial delignification of cattail fibre and recovery of lignin from the used retting bath of cattail fibre. The alkaline formulations were opted to the separation and removing gummy lignin materials for effective retting of cattail fibre. The retting parameters were studied to obtain the least strength loss and optimum lignin removal in the cattail fibres. The lignin recovery yielded 6.75 gram per litre (gpl) by keeping acidic medium for 1 h at room temperature. Recovered lignin was characterized through Fourier infrared spectroscopy and particle size analysis. The retted Cattail single fibre average diameter and fineness was 109 μm and tex, respectively. Tensile strength retained up to 60 % after retting.
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