Abstract
A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene (MA-PP) and maleic anhydride grafted ethylene-propylene-diene copolymer (MA-EPDM), on wood-flour/polypropylene (WF/PP) composites. WF/PP composites were prepared by direct extrusion profiles using a twin-screw/single-screw extruder system. DMA analysis showed that the loss factor of composites decreased and the storage modulus improved in the presence of MA-PP, which indicated much better interfacial adhesion between the PP matrix and wood flour filler than in the absence of compatibilizer. Morphological feature based on SEM observation showed that MA-PP and MA-EPDM improved the dispersion of the wood particles in the plastic matrix. MA-EPDM is a soft segment, although it improved the interfacial adhesion, storage modulus decreases with adding of MA-EPDM. As compatibilizer of wood-flour/polypropylene composites, both DMA analysis and SEM feature proved that MA-PP was superior to MA-EPDM.
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References
Adrian, J., Nunez, Pablo, C., Sturm, Jose, M., Kenny, et al. 2003. Mechanical characterization of polypropylene-wood flour composites [J]. J. Apply Polymer Science, 88: 1420–1828.
Ashida, M., Noguchi, T. 1985. Effect of matrix’s type on the dynamic properties for short fiber-elastomer composite [J]. J. Apply Polymer Science 30: 1011–1021.
David Harper, Michael Wolcott. 2004. Interaction between coupling agent and lubricants in wood-polypropylene composites [J]. Composites, 35: 385–394.
Fernanda, M.B., Coutinha, Thais, H.S., Costa, Joao Carlos M. Suarez, Daniele, P. Melo. 2000. Sawdust reinforced polypropylene composites: a study of fracture behavior [J]. Polymer Testing, 19: 625–633.
Georgopoulos, S.Th., Tarantili, P.A., et al. 2005. Thermoplastic polymers reinforced with fibrous agricultural residues [J]. Polymer Degradation Stability, 90: 303–312.
Hristov, V.N., Lach, R., Grellmann, W.. 2004a. Impact fracture behavior of modified polypropylene/ wood fiber composites [J]. Polymer Testing, 23: 581–589.
Hristov, V.N., Vasileva, S.T. 2004b. Deformation mechanisms and mechanical properties of modified polypropylene/wood fiber composites [J]. Polymer Composite, 25: 521–526.
Hristov, V.N., Vasileva, S.T. 2004c. Modified polypropylene/wood fiber composites: II fracture, deformation and mechanical properties [J]. J. Apply Polymer Science, 97: 1286–1292.
Ismail, H., Nizam, J.M., Abdul khalil, H.P.S. 2001. The effect of a compatibilizer on mechanical properties and mass swell of white rice husk ash filled natural rubber/linear low density polyethylene blends [J]. Polymer testing, 20(2): 125–123.
Joao C., Miguez S., Fernanda, M.B., Coutinha, Thais H., Sydenstricker. 2003. SEM Studies of tensile fracture surfaces of polypropylene-sawdust composites [J]. Polymer Testing, 22: 819–824.
Kristiina Oksman, Craig Clemons. 2003. Mechanical properties and morphology of impact modified polypropylene-wood flour composites [J]. J. Apply Polymer Science, 67: 1503–1513.
Krzysik, A.M., Youngqnist, J.A., Myers, G.E, Chahyadi, I.S. 1990. Wood-polymer bonding in extruded and nonwoven web composites panels [J]. Wood Adhesives, Symposium of USDA Forestservice, Madison, WI, 183–189.
Lu, J.Z., Wu, Q., McNabb, H.S. 2000. Chemical coupling in wood fiber and polymer composites: a review of coupling agents and treatments [J]. Wood Fiber Science, 32: 88–104.
Maurizio Avella, Luca Casale, et al. 1998. Broom fibers as reinforcing materials for polypropylene-based composites [J]. J. Apply Polymer Science, 68: 1077–1089.
McGrum, N.G., Read, B.E., Williams, G. 1967. An elastic and dielectric effects in polymeric solids [M]. London: wiley.
Qiu Wulin. 2005. Effect of maleated polypropylene on the performance of polypropylene/cellulose composite [J]. Polymer Composite, 52: 448–453.
Rajeev Karnani, Mohan Krishnan, Ramani Narayan. 1997. Biofiber-reinforced polypropylene composites [J]. Polymer Engineer Science, 37: 476–483.
Torres, F.G., Cubillas, M.L. 2005. Study of the interfacial properties of natural fiber reinforced polyethylene [J]. Polymer Testing, 24: 694–698.
Velichko Hritov, Stefanka Vasileva. 2003. Dynamic mechanical and thermal properties of modified poly (propylene) wood fiber composites [J]. Madromol. Mater. Eng. 288: 798–806.
Wang Yong, Zhang Qin, Na Bing, et al. 2003. Dependence of impact strength on the fracture propagation direction in dynamic packing injection molded PP/EPDM blends [J]. Polymer, 44: 4261–4271.
Wielage, B., Lampke, Th. 2003. Processing of natural-fiber reinforced polymers and the resulting dynamic-mechanical properties [J]. Materials processing technology, 139: 140–146.
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Foundation project: This paper was supported by National Foundation of Application of Agricultural Scientific and Technological Achievements (2006GB23600450).
Biography: GUO Chui-gen (1976-), male, Ph.D., lecturer in Northeast Forestry University, Harbin 150040, P.R. China.
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Guo, Cg., Song, Ym., Wang, Qw. et al. Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites. J. of For. Res. 17, 315–318 (2006). https://doi.org/10.1007/s11676-006-0072-7
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DOI: https://doi.org/10.1007/s11676-006-0072-7