Improving Impact Strength and Water Absorption Properties of Enset Fiber Reinforced Polyester Composite


  • Fitsum Adiraro Dunisho Dire Dawa Institute of Technology Dire Dawa University, Ethiopia
  • Tamana Dabasa Badasa Dire Dawa Institute of Technology Dire Dawa University, Ethiopia
  • Balasundaram K Dire Dawa Institute of Technology Dire Dawa University, Ethiopia



Natural Fiber, Polyester Resin, Alkali Treatment, Impact Strength, Water Absorption


This study investigated the utilization of natural Enset fiber which is extracted from a perennial herbaceous plant cultivated in southwestern Ethiopia as reinforcement in Polyester resin matrix for non-load bearing structural elements. The composite samples have been developed by manual hand layup followed by a compression technique. The fiber was treated with a 5wt% NaOH solution (Alkali treatment) for better fiber-matrix adhesion. The fiber percentages (10wt%, 20wt% and 30 wt% by weight) were used for the preparation of the composite. Impact strength and water absorption properties of both raw and alkali-treated fiber-based composite were studied. The result obtained shows that NaOH solution treatment has a positive effect on the impact strength and water absorption properties of the composite. For raw fiber-based composite optimum impact strength was recorded at 20wt% fiber content. However, for treated fiber-based composite highest value was obtained at 30wt% fiber content. For both raw and treated fiber-based composite water absorption is directly proportional to fiber content and it is high for raw fiber-based composite


Yirmaga, M.T. 2013. Improving the Indigenous Processing of Kocho, an Ethiopian Traditional Fermented Food. Journal of Nutrition and Food Science 3, pp: 1–6.

Č. Mizera, D. Herák, M. Müller and P. Hrabě, 2015, “Mechanical behavior of polymeric composite with fibers of false banana (Ensete ventricosum)” Journal of Agronomy Research 13(3), pp: 680–689

Alhayat Getu, 2012, Process Ability Enhancement of false Banana Fiber, master thesis.

Ermiyas Sisay, 2012, “Design and Analysis of Thick Partition Wall for Building from Local Composite Enset Fiber” Master thesis, Addis Ababa University

Edeerozey, A.M., Akil, H.M., Azhar, A.B., Ariffin, M.Z. 2007, Chemical modification of kenaf fibers Materials, pp, 2023-2025.

Xue Li, Lope G. Tabil and S. Panigrahi, 2007, “Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites: A Review” Journal of Polymers and the Environment, vol.15, pp 25–33

S. Kalia, B. S. Kaith and I. Kaur, 2000,"Pretreatments of Natural Fibers and Their Applications as Reinforcing Material in Polymer Composites - A Review," Polymer Engineering & Science, vol. 49, no. 7, pp. 1253-1272.

M. Hosur, H. Maroju and Shaik Jeelani,2014, “Comparison of Effects of Alkali Treatment on Flax Fibre Reinforced Polyester and Polyester-biopolymer Blend Resins” Journal of Polymers & Polymer Composites, Vol. 23, pp 229-241.

Shayesteh H, Gregory S, “Natural fiber reinforced Polyester Composites” journal of reinforced plastics and composites, 2015, vol 34, pp 1179-1190

Yicheng Du, “An Applied Investigation of Kenaf-Based Fiber/Polymer Composites As Potential Lightweight Materials For Automotive Components”, August 2010

Anthony N. Anyakora, “Evaluation of Mechanical Properties of Polyester Matrix Reinforced With Bamboo Fiber for the Production of Low Strength Building Products”, International Journal of Engineering and Applied Sciences, Vol. 2, No.2, February 2013

Lina S., Selvum P. and Uday V., banana fiber composite for automotive and transportation applications

A V Ratna, K Mohana and G Nagasrinivasulu, “Mechanical properties of banana empty fruit bunch fiber reinforced polyester composites” indian journal of fiber and textile research, vol.34, june 2009, pp 162-167

Gassan, J. and Bledzki, A.K, Possibilities for improving the mechanical properties of Jute/Epoxy composites by Alkali treatment of fibers, Composite Science and Technology, (1999), pp, 1303-1309.

B. S. Kaith, A. S. Singha, Sanjeev Kumar & Susheel Kalia: Mercerization of Flax Fiber Improves the Mechanical Properties of Fiber-Reinforced Composites, International Journal of Polymeric Materials, (2008), pp, 54



How to Cite

Fitsum Adiraro Dunisho, Tamana Dabasa Badasa, & Balasundaram K. (2020). Improving Impact Strength and Water Absorption Properties of Enset Fiber Reinforced Polyester Composite. I. J. Of Advances in Scientific Research and Engineering-IJASRE (ISSN: 2454 - 8006), 6(6), 138-143.