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Effect of Chemical Modifier on the Properties of Polypropylene (PP) / Coconut Fiber (CF) in Automotive Application

Authors: K. Shahril, A. Nizam, M. Sabri, A. Siti Rohana, H. Salmah


Chemical modifier (Acrylic Acid) is used as filler treatment to improve mechanical properties and swelling behavior of polypropylene/coconut fiber (PP/CF) composites by creating more adherent bonding between CF filler and PP Matrix. Treated (with chemical modifier) and untreated (without chemical modifier) composites were prepared in the formulation of 10 wt%, 20 wt%, 30 wt%, and 40 wt%. The mechanical testing indicates that composite with 10 wt% of untreated composite has the optimum value of tensile strength, and the composite with chemical modifier shows the tensile strength was increased. By increasing of filler loading, elastic modulus was increased while the elongation at brake was decreased. Meanwhile, the swelling test discerned that the increase of filler loading increased the water absorption of composites and the presence of chemical modifier reduced the equilibrium water absorption percentage.

Keywords: Coconut fiber, polypropylene, acid acrylic, ethanol, chemical modifier, composites.

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[1] D. Metin, F. Tihminlioglu, D. Balkose, S. Ulku. The effect of interfacial interactions on the mechanical properties of polypropylene/natural zeolite composites Composites: Part A 35 (2004) 23–32
[2] F. P. La Mantia, M. Morreale Mechanical Properties of Recycled Polyethylene Ecocomposites Filled with Natural Organic Fillers Polymer Engineering and Science (2006), 1131-1139
[3] M. M. Haque, M. Hasan, M. S. Islam, M. E. Ali Physico-mechanical properties of chemically treated palm and coir fiber reinforced polypropylene composites. Bioresource Technology 100 (2009) 4903–4906
[4] R. Lovino, R. Zullo, M.A. Rao, L. Cassar. Biodegradation of poly (lactic acid)/starch/coir biocomposites under controlled composting conditions. Polym. Degrad. Stabil. (2008). 93 (1), 147–157
[5] K.G. Satyanarayna, A.G. Kulkarni, P.K. Rohatgi. Potential natural fibers as a resource for industrial material in Kerala. J Sci Ind Res (1981);40: 222–37
[6] V. G. Geethamma, G. Kalaprasad, G. Groeninckx, S. Thomas. Dynamic mechanical behavior of short coir fiber reinforced natural rubber composites Composites: Part A 36 (2005) 1499–1506
[7] S. Harish, D. Peter Michael, A. Bensely, D. Mohan Lal, A. Rajadurai Mechanical property evaluation of natural fiber coir composite Materials Characterization, (2009) 60, 44-49
[8] C. Albano, M. Ichazo, J. Gonzalez, M. Delgado, R. Poleo. Effects of Filler Treatments on the Mechanical and Morphological Behaviour of PP Wood Flour and PPþSisal Fibre, Mat. Res. Innovat., (2001) 4: 284–293
[9] M. Sain, P. Suhara, S. Law and A. Bouilloux Interface Modification and Mechanical Properties of Natural Fiber-Polyolefin Composite Products Journal of Reinforced Plastics and Composites (2005) 24: 121
[10] E. P. Moore (1996) Polypropylene Handbook. Polymerization, Characterization, Properties, Processing, Applications, United States of America: Hanser Publishers, New York
[11] S. S. Mir, S.M.N. Hasan, M.J. Hossain, M. Hasan. Chemical modification effect on the mechanical properties of coir fiber. Engineering. J., 16, (2012) 73-83
[12] H. Nasrul, & A. Nairul (2008), Mechanical Properties of Polystyrene/ Polypropylene Reinforced Coconut and Jute Fibers, Faculty of Mechanical Engineering & Manufacturing, University of Tun Hussein Onn Malaysia, proceeding paper Curtin University Technology, Science, and Engineering (CUTSE) International Conference 2008, 24-27 November 2008, Miri.
[13] C. Y. Lai, S. M. Sapuan, M. Ahmad, and N. Yahya. Mechanical and Electrical Properties of Coconut Coir Fiber-Reinforced Polypropylene CompositesPolymer-Plastics Technology and Engineering, (2005) 44: 619–632.
[14] M. Munirah, R. Abdul Razak, H. Azman. (2007) Characterization and Treatments of Pineapple Leaf Fiber Thermoplastic Composite for Construction Application, thesis from Jabatan Kejuruteraan Polimer, Fakulti Kejuruteraan Kimia dan Kejuruteraan Sumber Asli Universiti Teknologi Malaysia
[15] Y. T. Zheng, D. R. Cao, D.S.Wang, J.J. Chen. Study on the interface modification of bagasse fibre and the mechanical properties of its composite with PVC. Composites: Part A 38 (2007) 20–25
[16] S. K. Saw, G. Sarkhel, A. Choudhury. Preparation and Characterization of Chemically Modified Jute–Coir Hybrid Fiber Reinforced Epoxy Novolac CompositesJournal of Applied Polymer Science, (2012) 125, 3038–3049.