Chemical modification of flax reinforced polypropylene composites |
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| Authors: | Maya Jacob John Rajesh D. Anandjiwala |
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| Affiliation: | 1. CSIR Materials Science and Manufacturing, Fibres and Textiles Competence Area, P.O. Box 1124, Port Elizabeth 6000, South Africa;2. Department of Textile Science, Faculty of Science, Nelson Mandela Metropolitan University, P.O. Box 1600, Port Elizabeth 6000, South Africa;1. Faculty of Applied Arts, University of Arts, Belgrade, Kralja Petra 4, 11000 Belgrade, Serbia;2. Department of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy;3. InterDepartmental Center for Industrial Research in Advanced Mechanics and Materials, University of Bologna, Viale Terracini 2, 40133 Bologna, Italy;1. Texas Materials Institute Materials Science and Engineering Program, The University of Texas at Austin, Austin, TX 78712, USA;2. Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712, USA;3. School of Human Ecology, The University of Texas at Austin, Austin, TX 78712, USA;1. Centre of Excellence in Engineered Fibre Composite (CEEFC), Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;2. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region;1. Department of Chemical Engineering Materials Environment, Sapienza-University of Rome, Via Eudossiana 18, 00184 Rome, Italy;2. School of Architecture and Design, University of Camerino, viale della Rimembranza, 63100 Ascoli Piceno, Italy;3. Pprime Institute, CNRS-ENSMA-Université de Poitiers, Department of Physics and Mechanics of Materials – ENSMA, 1, Av. Clément Ader, B.P 40109 Futuroscope Cedex, France;4. Department of Mechanical and Aerospace Engineering, Sapienza-University of Rome, Via Eudossiana 18, 00184 Rome, Italy |
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| Abstract: | This paper presents an experimental study on the static and dynamic mechanical properties of nonwoven based flax fibre reinforced polypropylene composites. The effect of zein modification on flax fibres is also reported. Flax nonwovens were treated with zein coupling agent, which is a protein extracted from corn. Composites were prepared using nonwovens treated with zein solution. The tensile, flexural and impact properties of these composites were analysed and the reinforcing properties of the chemically treated composites were compared with that of untreated composites. Composites containing chemically modified flax fibres were found to possess improved mechanical properties. The viscoelastic properties of composites at different frequencies were investigated. The storage modulus of composites was found to increase with fibre content while damping properties registered a decrease. Zein coating was found to increase the storage modulus due to enhanced interfacial adhesion. The fracture mechanism of treated and untreated flax reinforced polypropylene composites was also investigated from scanning electron microscopic studies. |
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