Investigation of Strength Properties of Paper Samples from Pulp Blends of Hibiscus Cannabinus and Pineapple Leaf Fibres

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Author(s) Anthony Kwame Danso | Samuel Fiifi Hammond
Pages 714-718
Volume 6
Issue 3
Date March, 2017
Keywords Fibre, Paper, Pulp, Kenaf Bark, Pineapple Leaf

Natural fibres from non-wood materials are important resources being exploited to meet the increasing demand for pulp and paper products. This study investigated the impact of pulp blending on the strength properties of papers obtained from the combination of pulp from Kenaf bark (Hibiscus cannabinus) and pineapple leaves (Anannus comosus). Chemical analyses of both materials were carried out according to respective methods. Pulp of Kenaf bark and pineapple leaf were obtained using soda pulping process at 18 % and 7 % alkali respectively. Handmade paper sheets were subsequently produced from bleached pulp samples combined in ratios 75%:25%, 50%:50%, and 25%:75% (kenaf bark: pineapple leaves) respectively. Paper samples were also produced from individual fibrous materials. Results showed that strength properties (modulus of elasticity, tensile stiffness, tear strength and elongation at peak) of paper samples produced from different ratios of pulp mixture vary significantly from the properties of paper from individual materials. Tear strength of paper from 100 % pulp of pineapple leaves (542.7 mN) increased by 62 % when combined with pulp of kenaf bark in ratio 50 % : 50 %, while the highest modulus of elasticity (63.02 N/mm) was observed in paper produced from pulp mixture (25 % : 75 %). Papers of differing strength properties can be obtained from the combination of pulp from kenaf bark and pineapple leaves in varying ratios and this can serve as a veritable alternative for softwoods.

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