In the process of developing interfacial interaction between newspaper fiber (NPF) and polypropylene (PP) by an intensive mixing, the morphological and microstructural characteristics which influence the mechanical behavior of the mixture were investigated by means of a scanning electron microscope (SEM) and a rheometer. The effects of mixing temperature and moisture content in the NPF on the mechanical behavior were elucidated.
The development of interfacial interaction took place in two stages, in which the first stage took place over a relatively short time. In this stage, the fiber was not uniformly dispersed in the melted PP matrix. A fully developed interfacial interaction was not developed until the second stage. In this stage, the fiber was uniformly dispersed into the matrix and coated with PP. The mechanical strength of the composite was maximized in the second stage of mixing.
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References
1.
1. Forest Products Society. (1999). Use of Agricultural Fibers in the Manufacture of Composite Panels. Madison, Wisconsin .
2.
2. Forest Products Society. (1999). Proceedings from the 5th International Woodfiber-Plastic Composites Conference, Madison, Wisconsin.
3.
3. Forest Products Society. (1977). Proceedings from the 4th International Woodfiber-Plastic Composites Conference, Madison, Wisconsin.
4.
4. Forest Products Society. (1995). Woodfiber-Plastic Composites: Virgin and Recycled Wood Fiber and Polymers for Composites, Madison, Wisconsin .
5.
5. Bolton, J. (1997). Plant fibres in composite materials: a review of technical challenges and opportunities. In: The Burgess-Lane Memorial Lectureship in Forestry. Vancouver: University of British Columbia . 5 March.
6.
6. Rowell, R.M. (1996). Opportunities for composites from agro-based resources. In: Rowell, R.M., Young, R.A. and Rowell, J.K. (eds.), Paper and Composites from Agro-Based Resources. Boca Raton, FL: CRE Press . pp. 249-276.
7.
7. Sanadi, A.R., Caulfield, D.F. and Jacobson, R.E. (1996). Agro-fiber thermoplastic composites. In: Rowell, R.M., Young, R.A. and Rowell, J.K. (eds.), Paper and Composites from Agro-Based Resources. Boca Raton, FL: CRE Press . pp. 377-401.
8.
8. Hon, D.N.-S. (1998). Pragmatic approaches to utilization of ligoncellulosic polymers: challenges and opportunities . In: Proceedings, the Second International Symposium on Natural Polymers and Composites. Atibaia SP, Brazil, 10-13 May.
9.
9. Kokta, B.V. (1986). Use of wood fibers in thermoplastic/composites III. Polymethyl methacrylate. In: Sedlacek, B. (ed.), Polymer Composites. New York: Walter de Gruyter & Co.
10.
10. Choutrou, C., Riedl, B. and Ait-Kadi, A. (1992). Reinforcement of recycled polyolefins with wood fibers . J. Reinf. Plast. Comp., 11: 373 .
11.
11. Ramos, M.A. and Belmontes, F.A. (1991). Polypropylene/low density blend matrices and short glass fiber based composites. III . Morphology and fiber orientation. Polym. Compos., 12: 7 .
12.
12. Bataille, P., Ricard, L. and Sapieha, S. (1987). Properties of cellulose containing polypropylene. ANTEC 87, pp. 791-793.
13.
13. Folkes, M.J. (1982). Short Fibre Reinforced Thermoplastics. Chichester, New York, Brisbane, Toronto, Singapore: Research Studies Press . pp. 59-76.
14.
14. Raj, R.G., Kokta, B.V. and Daneault, C. (1989). Polypropylene-wood fiber composites: effect of fiber treatment on mechanical properties . Intern. J. Polymeric Mater., 12: 239 .
15.
15. Wu, S. (1982). Polymer Interface and Adhesion. New York and Basel: Marcel Dekker . pp. 337-354.
16.
16. Klason, C. and Kubat, J. (1986). Cellulosic fillers for thermoplastics. In: Sedlacek, B. (ed.), Polymer Composites. Berlin, New York: Walter de Gruyter & Co. pp. 153-166.
17.
17. Kaelble, D.H. (1971). Physical Chemistry of Adhesive. New York: Wiley Interscience . pp. 117-143.
18.
18. Hon, D.N.-S. and Buhion, C. (1997). Composites from commingled PET, HDPE and newspaper fiber . J. Thermoplastic Composite Materials, 10: 287-301 .
19.
19. Hon, D.N.-S. (November 1992). Composites from municipal solid waste: mathematical models for energy consumption and mechanical properties . In: Proceedings of the Pacific Rim Bio-Based Composites Symposium. Rotorua, New Zealand. pp. 376-385 .
20.
20. Hon, D.N.-S. and Buhion, C.J. (1994). Processability and compatibility of polyethylene terephthalate and high-density polyethylene from post-consumer wastes . J. Thermoplastic Composite Materials, 7: 4-13 .
21.
21. Erickson, P.W. and Plueddemann, E.P. (1974). Historical background of the interface-studies and theories. In: Broutman, L.J. and Krock, R.H. (eds.), Composite Materials. New York: Academic Press .
22.
22. Hon, D.N.-S., Chao, W.Y. and Buhion, C.T. (1992). Commingled plastic and newspaper composites . Plastics Engineering, 48(10): 25-28 .
23.
23. Ren, S. and Hon, D.N.-S. (1993). Newspaper fiber-reinforced polypropylene composite . J. Reinforced Plastics and Composites, 12: 1311-1322 .
24.
24. Hon, D.N.-S. and Sean, S.T. (1993). Composites from newsprint fiber and polyolefin: their processability and properties. In: Wolcott, M.P. (ed.), Wood Fiber/Polymer Composites: Fundamental Concepts, Processes, and Material Options. pp. 63-67.
25.
25. Sanadi, A.R., Young, R.A., Clemons, C. and Rowell, R.M. (1994). Recycled newspaper fibers as reinforcing fillers in thermoplastics: part I. Analysis of tensile and impact properties in polypropylene . J. Rein. Plast. Compos., 13: 54 .
26.
26. Ren, S. and Hon, D.N.-S. (1992). Characteristics of newspaper fiber reinforced polypropylene composites . Paper presented at the Tech. Forum of the Forest Products Research Society 46th Annual Meeting, Charleston, 21-24 June.
27.
27. Cheremisinoff, N.P. (1987). Polymer Mixing and Extrusion Technology. New York and Basel: Marcel Dekker, Inc. pp. 76-175.
28.
28. Xanthos, M. (1988). Interfacial agents for multiphase polymer systems: recent advances . Polym. Eng. Sci., 28: 1392 .
