On the microstructure and physical properties of untreated raffia textilis fiber |
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| Authors: | RG Elenga GF Dirras J Goma Maniongui P Djemia MP Biget |
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| Affiliation: | 1. Laboratoire des Matériaux et Énergies, Faculté des Sciences, Université Marien Ngouabi, BP 69, Brazzaville, Congo;2. Laboratoire des Propriétés Mécaniques et Thermodynamiques des Matériaux, LPMTM – CNRS, UPR 9001, Institut Galilée, Université Paris 13, 99, Av. J. B. Clément, 93430 Villetaneuse, France;1. Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi, Coimbatore, Tamil Nadu, India;2. Department of Mechanical Engineering, Tamilnadu College of Engineering, Coimbatore, India;1. Department of Mechanical Engineering, Kamaraj College of Engineering and Technology, Virudhunagar, 626001, Tamilnadu, India;2. Department of Mechanical Engineering, Kamaraj College of Engineering and Technology, Virudhunagar, 626001, Tamilnadu, India;3. Department of Mechanical Engineering, Ramaiah Institute of Technology, Bengaluru, 560054, India;4. Department of Mechanical Engineering, MepcoSchlenk Engineering College, Sivakasi, 626005, India;5. Department of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China;2. Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan;3. Graduate School of Science and Technology, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan;4. School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand;1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Laboratory of Polymer Processing, Rabat, Morocco;2. Faculty of Science, Laboratory of Mechanic and Materials (LMM), Mohammed V-Rabat, University, Rabat, Morocco |
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| Abstract: | We report on the first measurements of the physico-mechanical properties of the raffia textilis fiber. This fiber is the epidermis of the leaflet and is used to fabricate many ethnographical items. Scanning electron microscopy reveals a layered structure: a top layer with a tile-like structure, and a bottom layer with a honeycomb-like structure. X-ray diffraction and FTIR-ATR show the presence of cellulose Iβ with a crystallinity index of 64%. Tensile tests give a Young’s modulus of 30 GPa, a tensile strength of 500 ± 97 MPa, and a total elongation between 2% and 4%. The fiber density is 0.75 ± 0.07, conferring to it the highest known specific mechanical properties among all studied raw vegetable fibers. |
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