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Abstract

In the present study epoxy and polyester resins have been reinforced with physically modified (alkali treated) bamboos strip matting to develop bamboo fiber-reinforced plastic (BFRP) composites. Bamboo mats were treated with 1, 2, 5, 10, 15, 20, and 25% concentration of NaOH in distilled water for 30 min at 20°C (room temperature). The mechanical properties of the alkali treated bamboo composites (tensile strength, elastic modulus, flexural strength, flexural modulus, toughness, and impact strength) were determined. Optimum results have been obtained by bamboos treated with 5% NaOH solutions. Higher percentages of NaOH concentration result in poor mechanical properties of composites. The morphology analysis reveals that the bamboo treated with 5% NaOH exhibited better compatibility with the epoxy and polyester resins than the untreated bamboo. The improvements in tensile strength and flexural strength were higher by 55.15 and 43.92%, respectively, for composites with epoxy matrix. In the case of alkali-treated composites with polyester matrix, the tensile strength and flexural strength were higher by 69 and 59%, respectively.

Keywords

bamboo NaOH BFRP.

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References

Thwe, M.M. and Liao, K. ( 2003). Durability of Bamboo-Glass Fiber Reinforced Matrix Hybrid Composites, Compos. Sci. Technol., 63: 375-387.

Rong, M.Z. , Zhang, M.Q. , Liu, Y. , Yang, G.C. and Zeng, H.M. ( 2001). The Effect of Fiber Treatment on the Mechanical Properties of Unidirectional Sisal-Reinforced Epoxy Composites, Compos. Sci. Technol., 61: 1437-1447.

Rana, A.K. , Mitra, B.C. and Baberjee, A.N. ( 1999). Short Jute Fiber-Reinforced Polypropylene Composite: Dynamic Mechanical Study, J. Appl. Polym. Sci., 71: 531-539.

Nair, K.C.M. , Kumar, R.P. , Thomas, S. , Schit, S.C. and Ramamurthy , K. (2000). Rheological Behavior of Short Sisal Fiber-Reinforced Polystyrene Composites , Composites A, 31: 1231-1240.

Gassan, J. and Gutowski, V.S. ( 2000). Effect of Corona Discharge and UV Treatment on the Properties of Jute-Fiber Epoxy Composites, Compos. Sci. Technol., 60: 2857-2863.

Hepworth, D.G. , Vincent, J.F.V. , Jeronimidis , G. and Bruce, D.M. (2000). The Penetration of Epoxy Resin into Plant Fiber Cell Walls Increases the Stiffness of Plant Fiber Composites, Compos. Part A, 31: 599-601.

Hill, C.A.S. and Khalil, H.P.S. (2000). Effect of Fiber Treatments on Mechanical Properties of Coir or Oil Palm Fiber Reinforced Polyester Composites , J. Appl. Polym. Sci., 78: 1685-1697.

Deshpande, A.P. , Rao, M.B. and Rao, C.L. (2000). Extraction of Bamboo Fibers and their Use as Reinforcement in Polymeric Composites, J. Appl. Polym. Sci., 76: 83-92.

Oksman, K.L. and Berglund, W.L.A. (2002). Morphology and Mechanical Properties of Unidirectional Sisal-Epoxy Composites, J. Appl. Polym. Sci., 84: 2358-2365.

10.

Stael, G.C. and Tavares, M.I.B. (2000). A Solid State NMR Carbon-13 High Resolution Study of Natural Fiber from Sugar Cane and their composites with EVA, Polym. Test., 19: 251-259.

11.

Pothan, L.A. , Oommen, Z. and Thomas, S. (2003). Dynamic Mechanical Analysis of Banana fiber Reinforced Polyester Composites, Compos. Sci. Technol., 63: 283-293.

12.

Pothan, L.A. and Thomas, S. (2003). Polarity Parameters and Dynamic Mechanical Behavior of Chemically modified Banana Fiber Reinforced Polyester Composites, Compos. Sci. Technol., 63: 1231-1240.

13.

Bledzki, A.K. , Reihmane, S. and Gassan, J. (1996). Properties and Modification Methods for Vegetables Fibers for Natural Fiber Composites, J. Appl. Polym. Sci., 59: 1329-1336.

14.

Varma, D.S. , Varma, M. and Varma, I.K. (1984). Coir Fiber I: Effect of Physical and Chemical Treatments on Properties, Text. Res. Inst., 54: 827-832.

15.

Sreenivasan, S. , Bahama, I.P. and Iyer Krishnan , K.R. (1996). Influence of Delignification and Alkali Treatments on the Fine Structure of Coir Fibers (Cocos Nucifera), J. Mat. Sci., 31: 721-726.

16.

Sharma, H.S.S. , Fraser, T.W. , McCall, D. and Lyons, G. (1995). Fine Structure of Chemically Modified Flax Fiber, J. Textile Inst., 86: 539-548.

17.

Weyenberg, I.V. and Verpoest, I. (2003). Influence of Processing and Chemical Treatment of Flax Fibers on their Composites, Composite Science and Technology, 63: 1241-1246.

18.

Stamboulis, A. and Peijs, T. (2000). Environmental Durability of Flax Fibers and their Composites based on Polypropylene Matrix, Applied Composite Materials, 7: 273-294.

19.

Gonzalez, A.V. and Franco, P.J.H. (1999). Effect of Fiber Surface Treatment on the Fiber Matrix Bond Strength of Natural Fiber Reinforced Composites , Composites Part (B), 30: 309-320.

20.

Mauerer, O. ( 2005). New Reactive, Halogen-free Flame Retardant System for Epoxy Resins, Polym. Degrad. Stab., 88: 70-73.

21.

Jain, S. , Kumar, R. and Jindal, U.C. ( 1992). Mechanical Behavior of Bamboo and Bamboo Composites, Journal of Material Science, 27: 4598-4604.

22.

Jindal, U.C. ( 1986). Development and Testing of Bamboo-Fibers Reinforced Plastic Composites, Journal of Composite Materials, 20: 19-29.

23.

Joseph, S. , Sreekala, M.S. , Oommen, Z. , Koshy, P. and Thomas, S. ( 2002). A Comparison of the Mechanical Properties of Phenol Formaldehyde Composites Reinforced with Banana Fibers and Glass Fibers, Comp. Sci. Tech., 62: 1857-1868.

24.

Gassan, J. and Bledzki, A.K. ( 1999). Possibilities for Improving the Mechanical Properties of Jute/Epoxy Composites by Alkali Treatment of Fibers, Compos. Sci. Technol., 59: 1303-1309.

Enhanced Mechanical Strength of BFRP Composite Using Modified Bamboos

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