The effect of chemical treatment of wood flour on some of properties of wood plastic composite

Document Type : Research Paper

Authors

1 M.Sc degree of wood composite products, Zabol University and member of Young Researchers and Elite Club, Chalous Branch, Islamic Azad University, Chalous

2 Graduated of M.Sc degree of wood composite products, Zabol University

3 Assistant Professor of Department of wood and paper, University of Zabol

Abstract

This research aimed to investigate the effect of chemical treatment of wood flour on some of physical, mechanical and morphological properties of wood plastic composite. Chemical treatment of wood flour at 7 levels without treatment, acetylation, benzoylation, mercerization, magnesium hydroxide, calcium hydroxide and warm water treatment were considered as variable factors. For evaluate reaction of wood flour with chemical materials, weight percent gain (WPG) were calculated. After chemical treatment, Wood flour and polypropylene with weight ratio of 60 to 40 and 4 per hundred compound (phc) of coupling agent mixed in the extruder device and then the specimens were fabricated by injection molding method. Then mechanical tests Included tensile, flexural and impact strength and physical examination, including water absorption and thickness swelling was performed on specimens according to (ASTM) standard. Also to study the morphology of the composites, scanning electron microscopy (SEM) was used. The results showed that by chemical treatment the mechanical strength increased and physical properties such as water absorption and thickness swelling decreased. Also the highest chemical treatments of wood flour was related to the banzylation treatment. As well as obtained results of scanning electron microscopy was indicate improve in cross linking between fibers and polymeric matrix on effect of chemical treatment, so that in treatment samples exiting of fibers into the matrix not observed.

Keywords

References

[1] Viksne, A., Rence, L. and Berzina, R., 2003. Influence of modifiers on the physic mechanical properties of sawdust-polyethylene composites. Mechanics of Composite Materials, 40(2): 169-177.
[2] Ashori, A., 2008. Wood-plastic composites as promising green-composites for automotive industries. Bio resources Technology, 99: 4661-4667.
[3] Matuana, L.M., Park, C.B. and Balatinecz, J.J., 1998. Cell morphology and property relationships of microcellular foamed PVC/wood fiber composites. Polymer Eng Sci, 38: 1862-1872.
[4] Mohebby, B., 2003. Biological attack of acetylated wood. Ph.D. Thesis, Gottingen University, Gottingen, 147 p. (In Persian).
[5] Hill, C., 2006. Wood modification chemical, Thermal and Other Process John Wiley and Sons Ltd, 260 p.
[6] Albano, C., Ichazo, M., Gonzalez, J., Delgado, M. and Poleo, R., 2001. Effects of filler treatments on the mechanical and morphological behavior of PP+wood flour and PP+sisal fiber. J. Mat. Res. Innovate, 4: 284-293.
[7] Mishra, S., Tripathy, S.K. and Mohanty, A.K., 2001. Graft copolymerization of acrylonitrile on chemically modified sisal fibers. Macromolecular Material and Engineering, 286(2): 107-113.
[8] Luz, S.M., Del Tio, J., Rocha, G.J.M., Goncalves, A.R. and Del’Arco, Jr.A.P., 2008. Cellulose and cell lignin from sugarcane bagasse reinforced polypropylene composites: Effect of acetylation on mechanical and thermal properties. Composites: Part A, 39: 1362–1369.
[9] Kord, B. and Taghizadeh Haratbar, D., 2014. Influence of fiber surface treatment on the physical and mechanical properties of wood flour-reinforced polypropylene bionanocomposites. Journal of Thermoplastic Composite Materials, DOI: 10.1177/0892705714551592.
[10] Kalagar, M., Baziyar, B., Khademi eslam, H., Ghasmi, E. and Hemmasi, A.H., 2015. The investigation on composites produced using polylactic acid/wheat straw fibers treated with silane. Iranian Journal of Wood and Paper Science Research 30(2): 207-219. (In Persian).
[11] Ghasemi, I. and Farsi, M., 2010. Interfacial behavior of wood plastic composite: effect of chemical treatment on wood fibers. Iran Polymer J, 19(10): 811–818. (In Persian).
[12] Ghasemi, I. and Farsi, M., 2010. Interfacial behavior of wood plastic composite: effect of chemical treatment on wood fibers. Iran Polymer J, 19(10): 811–818. (In Persian).
[13] Susheel, K., Kaith, B.S. and Inderjeet, K., 2009. Pretreatments of natural fibers and their application as reinforcing material in polymer composites: a review. Polymer Eng Sci, 49: 1253–1272.
[14] American Society for Testing and Materials. ASTM. Standard practice for injection molding test specimens of thermoplastic molding and materials. Annual book of ASTM standards, Philadelphia, ASTM D3641-12, 2012.
[15] American Society for Testing and Materials. ASTM. Standard practice for conditioning plastics for testing. ASTM D618-13, for testing, Annual book of ASTM standards, Philadelphia, ASTM D618-13, 2013.
[16] American Society for Testing and Materials. ASTM. Standard test method for flexural properties of unreinforced and reinforced plastics and electrical insulating materials. Annual book of ASTM standards, Philadelphia, ASTM D790-10, 2010.
[17] American Society for Testing and Materials. ASTM. Standard test method for tensile properties of plastics. Annual book of ASTM standards, Philadelphia, ASTM D638-10, 2010.
[18] American Society for Testing and Materials. ASTM. Standard test methods for determining the izod pendulum impact resistance of plastics. Annual book of ASTM standards, ASTM D256-10, 2010.
[19] American Society for Testing and Materials. ASTM. Standard guide for evaluating mechanical and physical properties of wood-plastic composite products. Annual book of ASTM standards, Philadelphia, ASTM D7031-11, 2011.
[20] Dominkovics, Z., Danyadi, L. and puka'nszky, B., 2007. Surface modification of wood flour and its effect on the properties of PP/wood composites. Composites Part A, 38(8): 1893-1901.
[21] Li, X., Tabil, L.G. and Panigrahi, S., 2007. Chemical treatments of natural fiber for use in natural fiber reinforced composites: a review. J. Polymer Environ, 15: 25–33.  
[22] Farsi, M., 2010. Wood–plastic composites: influence of wood flour chemical modification on the mechanical performance. J Reinf Plast Compos, 29(24): 3587–3592.
[23] Nourbakhsh, A., Karegarfard, A. and Ashori, A., 2010. Effects of particle size and coupling agent concentration on mechanical properties of particulate-filled polymer composites. J Thermoplastic Compos Mater, 23(2): 169–174.
[24] Kalia, S., Kaith, B.S. and Kaur, I., 2009. Pretreatment of natural fiber and their application as reinforcing material in polymer composites. A review polymer Engineering and science, 49(7): 1253-1272.
[25] Rosenqviset, M., 2001. Acetyl group distribution in acetylated wood investigated by micro autoradiography. Holzforschung, 55(3): 270-275.
[26] Espert, A., Vilaplana, F. and Karlsson, S., 2004. Compression of water absorption in natural cellulosic fibers from wood and one-year crops in polypropylene composites and its influence on their mechanical properties. Journal of composites Part A, 35(11): 1267-1276.
[27] Liu, W., Mohanty, M. and Askeland, A.K., 2004. Influence of fiber surface treatment on properties of Indian grass fiber reinforced soy protein based bio composites. J Polymer Sci, 45(22): 7589–7596.  
[28] Militz, H. and Beckers, E.P.J., 1994. Process for acetylating solid wood, European Patent Application, 85850268.5.
Iranian Journal of Wood and Paper Industries
Volume 7, Issue 3 - Serial Number 3
December 2016
Pages 449-462

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