Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31108
Effects of Coupling Agent on the Properties of Henequen Microfiber (NF) Filled High Density Polyethylene (HDPE) Composites

Authors: Pravin Gaikwad, Prakash Mahanwar


The main objective of incorporating natural fibers such as Henequen microfibers (NF) into the High Density Polyethylene (HDPE) polymer matrix is to reduce the cost and to enhance the mechanical as well as other properties. The Henequen microfibers were chopped manually to 5-7mm in length and added into the polymer matrix at the optimized concentration of 8 wt %. In order to facilitate the link between Henequen microfibers (NF) and HDPE matrix, coupling agent such as Glycidoxy (Epoxy) Functional Methoxy Silane (GPTS) at various concentrations from 0.1%, 0.3%, 0.5%, 0.7%, 0.9% and 1% by weight to the total fibers were added. The tensile strength of the composite increased marginally while % elongation at break of the composites decreased with increase in silane loading by wt %. Tensile modulus and stiffness observed increased at 0.9 wt % GPTS loading. Flexural as well as impact strength of the composite decreased with increase in GPTS loading by weight %. Dielectric strength of the composite also found increased marginally up to 0.5wt % silane loading and thereafter remained constant. 

Keywords: Polymer composites, HDPE, Henequen microfibers (NF), coupling agent, GPTS

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2120


[1] A.K. Rana, A. Mandal, and S. Bandopadhyay, “Short jute fiber reinforced polypropylene composites: Effect of compatibiliser, impact modifier and fiber loading,” Composite Science Tech., vol. 63 (6), 2003, pp.801-806,.
[2] T. Nishino, K. Hirao, M. Kotera, K. Nakamae, and H. Inagaki, “Kenaf reinforced biodegradable composites,” Composite science Tech., vol.63(9), 2003, pp.1281-1286.
[3] L.M. Arzondo, C.J. Perez, and J.M. Corella, “Injection molding of long sisal fiber-reinforced polypropylene: Effects of compatibiliser concentration and viscosity on fiber adhesion and thermal degradation,” Polymer Eng Sci.., vol.45 (4), 2005, pp.613–621.
[4] K.C. Nair, S. Thomas, and G. Groeninckx, “Thermal dynamic mechanical analysis of polystyrene composite reinforced with short sisal fiber,” Composites Science and Technology, vol. 61(16), 2001, pp.2519–2529.
[5] Y. Pang, D. Cho, S.O. Han, and W.H. Park, “Interfacial strength and thermal properties of electron beam treated henequen fibers reinforced unsaturated polyester composites, vol.13(5),2005, pp453-459.
[6] G.C. Yang, H.M. Zeng, and J.J. Li, “Study of sisal fiber /phenol formaldehyde resin composite (in Chinese),” Journal of Fiber Reinforced Plastics/Composites, vol.3,1997, pp.12-14.
[7] M. Anguilar-Vegaand, and C.A. Cruz-Ramos, “Properties of henequen cellulosic fibers,” Appl Polym Sci., vol. 56(10), 1995, pp.1245-1252.
[8] Y. Xie, A.S. Callum, Z. Xiao, H. Militz, and C. Mai, “Silane coupling agents used for natural fiber/polymer composites: A review,” Composites Part A: Applied Science and Manufacturing, vol.41 (7), 2010 pp.806-819.
[9] H.S. Lee, and D. Cho, “Effect of natural fiber surface treatment on the interfacial & mechanical properties of henequen/polypropylene biocomposites,” Macromolecular Research, vol. 16(5), 2008, pp.411- 417.
[10] N. Phueakbuakhao, W. Prissanaroon-ouajai, and N.Kreua-ongarjnukool, “Effect of coupling agent on mechanical properties and morphology of CaCO3 filled recycled High Density Polyethylene,” Journal of Metals, Materials & Minerals, vol. 18(2),2008 pp.131-135.
[11] Z.H. Liu, K.W. Kwok, R.K.Y. Li ,and C.L. Choy, “Effects of coupling agent & morphology on the impact strength of High Density Polyethylene/CaCO3 Composite,” Polymer, vol.3 (8),2002, pp. 2501- 2506.
[12] J. Gonzalez, C. Albano, I. Lehazo, and B. Diaz, “Effects of coupling agent on mechanical and morphological behaviour of PP/HDPE blend with the two different CaCO3,” European Polymer Journal, vol. 38(12), 2012, pp.2465-2475.
[13] S.R. Liamazares, A. Zuniga, J. Castano, and L.R. Radovic, “Comparative study of maleated PP as a coupling agent for recycled low-density polyethylene/wood floor composites,” Journal of Applied Polymer Science, vol. 122(3), 2011, pp.1731-1741.
[14] X. Yuan, D. Bhattacharyya, and A. Easteal, “Effects of coupling agent on mechanical performance of Polyethylene composite comprising Wallastonite microfibers,” Key Engineering materials, vol. 334- 335,2007, pp.265-268.
[15] R.G. Raj, B.V. Kotka, D. Maidas, and C. Daneault, “Use of wood fiber in thermoplastics: The effect of coupling agent in Polyethylene-Wood fiber composites,” Journal of Applied Polymer Science, vol. 37(4), 1989, pp.1089-1103.
[16] N.Chand, and U.K. Dwivedi, “Effects of coupling agent on abrasive wear behaviour of chopped jute fiber-reinforced PP composites,” Wear, vol.261, 2006, pp.1057-1063.
[17] O.M.L. Asumani, R.G. Reid, and R. Paskaramoorthy, “The effects of alkali-silane treatment on the tensile and flexural properties of short fiber non-woven Kenaf reinforced PP composites,” Composites Part A: App. Sci. and Manufacturing, vol. 43(9), 2012, pp.1431-1440.
[18] P.A.Mahanwar, and P.R.Gaikwad, “Effect of coupling agent on the properties of short non-woven PET microfiber reinforced PP composites,” International Journal of Chemical, Environmental & Biological Sciences vol.2 (5), 2014, pp.175-180.