Composites of high-density polyethylene and acetylated steam-exploded Acacia mangium fibers are immersed in water at room temperature for 30 days and tested for tensile properties after 2, 4, and 6 days of immersion. All composites absorb water but the water uptake decreases with increasing weight percent gain (WPG) of the acetylated fibers (AAEF). Immersion time has negative effect on the tensile properties and the impact is lesser for composites filled with AAEF of higher WPG. Tensile modulus decreases linearly (R 2=0.80) with water uptake. Acetylation does not improve fiber—matrix interaction but reduces the amount of water absorbed by the composite systems.
Bledzki, A.K. and Faruk, O. (2004). Creep and Impact Properties of Woodfiber-polypropylene Composites: Influence of Temperature and Moisture Content, Composites Science and Technology, 64: 693-700.
2.
Rowell, R.M., Cleary, B.A., Rowell, J.S., Clemons, C. and Young, R.A. (1993). Results of Chemical Modification of Lignocellulosic Fibers for Use in Composites. In: Processes, and Material Options, Wood Fiber/Polymer Composites: Fundamental Concepts, Wolcott, M.P. (ed.), pp. 121-127, Forest Prod. Soc., Madison.
3.
Winandy, J.E. and Rowell, R.M. (1984). American Chemical Society Advances in Chemistry, Series No. 207, In: Rowell, R.M. (ed.), The Chemistry of Solid Woods, pp. 211-255, American Chemical Society, Washington DC.
4.
Glasser, W.G. , Taib, R., Jain, R.K. and Kander, R. (1999). Fiber-Reinforced Cellulosic Thermoplastic Composites, J. Appl. Polym. Sci., 73: 1329-1340.
5.
Angles, M.N. , Salvado, J. and Dufresne, A. (1999). Steam-exploded Residual Softwood-filled Polypropylene Composites, J. Appl. Polym. Sci., 74: 1962-1977.
6.
Stark, N.M., Matuana, L.M. and Clemons, C.M. (2003). Effect of Processing Method on Accelerated Weathering of Woodflour-HDPE Composites, In: Proceeding of 7th International Conference on Woodfiber-plastic Composites, pp. 79-87, Forest Prod. Soc, Madison, Wis.
7.
Xue, Y., Veazie, D., Glinsey, C., Wright, M. and Rowell, R.M. (2003). Mechanical Properties of Wood Fiber Composites Under the Influence of Temperature and Humidity, In: Proceeding of 7th International Conference on Woodfiber-plastic Composites , pp. 339-343, Forest Prod. Soc, Madison, Wis.
8.
Mat Taib, R. , Mohd Ishak, Z.A., Rozman, H.D. and Glasser, W.G. (2006). Effect of Moisture Absorption on the Tensile Properties of Steam-exploded Acacia mangium Fiber-Polypropylene Composites, Journal of Thermoplastic Composite Materials, 19: 475-489.
9.
Overend, R.P. and Chronet, E. (1987). Fractionation of Lignocellulosics by Steam-Aqueous Pretreatments, Phil. Trans. R. Soc. Lond. , A321: 523-536.
10.
Thwe, M.M. and Liao, K. (2002). Effects of Environmental Aging on the Mechanical Properties of Bamboo-Glass Fiber Reinforced Polymer Matrix hybrid Composites , Composites, Part A33: 45-52.
11.
Gouanve, F. , Marais, S., Bessadok, A., Langevin, D. and Metayer, M. (2007). Kinetics of Water Sorption in Flax and PET Fibers, Eur. Polym. J., 43: 586-598.
12.
Dhakal, H.N. , Zhang, Z.Y. and Richardson , M.O.W. (2006). Effect of Water Absorption on the Mechanical Properties of Hemp Fiber Reinforced Unsaturated Polyester Composites, Compos. Sci. Technol., 67: 1674-1683.
13.
Stamboulis, A. , Bailie, C.A. and Peijs, T. (2001). Effects of Environmental Conditions on Mechanical and Physical Properties of the Flax Fibers, Composites: Part A, 33: 1105-1115.
14.
Zadorecki, P. and Flodin, P. (1985). Surface Modification of Cellulose Fibers. II. The Effect of Cellulose Fiber Treatment on the Performance of Cellulose-Polyester Composites, J. Appl. Polym. Sci., 30: 3971-3983.
