5. CONCLUSION
The Young’s modulus of raw treated coir fiber increased with increase in span length, while the tensile strength and strain to failure of the same decreased with increase in span length.
The surface of raw coir fiber was a bit rough and porous, while the surface of double stage chemical treated coir fiber was found compact and smoother.
Chemical treatment improves the tensile properties of coir fiber.
Double stage chemical treatment showed better properties compared to the single stage chemical treatment.
6. ACKNOWLEDGEMENT
The authors would like to thank Bangladesh University of Engineering and Technology
(BUET), Dhaka, Bangladesh for their financial support during present research.