preparation and characterization of roselle fibre polymer reinforced composites
P.Ramu,G.VR.Sakthivel
Published in International Journal of Advanced Research in Mechanical and Production Engineering and Development
ISSN: 2320-7256 Impact Factor:1.398 Volume:1 Issue:1 Year: 08 June,2013 Pages:28-32
Abstract
In recent years, for high performance natural fibre composites, the bast fibers, extracted from the stems of plants such as jute, kenaf, flax, ramie, mesta and hemp are widely accepted as the best candidates due to their very good mechanical properties. In this present work, untreated bast–roselle fibre with different proportion was used as reinforcements to polymer based matrices. The aspect ratios of the fibres are maintained as 15cm constantly for all fibre contents. The effects of fibers content on mechanical properties and machinability of roselle fibres composite material without and with moisture were studied. An improvement in strength and stiffness combined with high toughness were achieved in without moisture composite specimen by varying the fibre content. On the other hand, the addition of roselle to the matrix was found to decrease the impact strength with the exception of 10 % fibre content for the composite without moisture and also 10% fibre content of the composite with moisture. A decrease in strain at break was observed with an increase in fibre content in both cases. In wear testing, 30% fibre content composites showed good wear resistance in both cases.
Kewords
Natural fibres composites; Bast-Roselle fibre; Polyester; Mechanical properties.
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