Morphological aspects and mechanical properties of single bamboo fibers and flexural characterization of bamboo/ epoxy composites

Abstract

A novel mechanical extraction process was developed to obtain long bamboo fibers to be used as reinforcement in structural composites. A single-fiber tensile test at four different span lengths for fibers of the bamboo species Guadua angustifolia was performed. Strength values of 800 MPa and Young’s modulus of 43 GPa were obtained. Unidirectional bamboo fiber/epoxy composites (BFC) were produced with untreated and alkali-treated fibers to evaluate the effectiveness of the new reinforcing material. Flexural tests were performed with two fiber orientations (longitudinal and transverse). The longitudinal flexural strength is higher when untreated fibers are used while the treatment benefits the longitudinal flexural stiffness of the composite. Transverse strength increases at lower alkali concentrations, but the transverse three-point bending strength of untreated bamboo in epoxy is already quite high at around 33 MPa. The results illustrate that these bamboo fibers present a natural and renewable option to reinforce composites in several applications where glass fiber and traditional natural fibers are used nowadays.

Keywords

polymer matrix composites mechanical properties mechanical testing bamboo fibers natural fiber

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References

Joshi SV , Drzal LT , Mohanty AK and Arora S.

Are natural fiber composites environmentally superior to glass fiber reinforced composites?

Composites Part A 2004; 35: 371-376.

Mohanty AK , Misra M. and Drzal T. Sustainable Bio-composites from renewable resources: opportunities and challenges in the green material world. J Polym Environ 2002; 10: 19-26.

Kozlowski R. and Wladyka-Przybylak M. Use of natural fiber reinforced plastics. In: Wallenberger F and Weston N (eds) Natural fibers, plastics and composites. Boston, MA: Kluwer Academic Publishers, 2004, pp.249-250.

Ray AK , Das SK , Mondal S. and Ramachandrarao P. Microstructural characterization of bamboo. J Mater Sci 2004; 39: 1055-1060.

Bledzki A. and Gassan J. Composites reinforced with cellulose based fibres. Prog Polym Sci 1999; 24: 221-274.

Gomes A. , Goda K. and Ohgi J. Effects of alkali treatment to reinforcement on tensile properties of curaua green composites. JSME Int J, Ser A 2004; 47(4): 541-546.

Brouwer W.

Natural fibre composites in structural components: alternative application for sisal?

FAO Report Y1873E, 2004.

Murali K. and Mohana K. Extraction and tensile properties of natural fibers: vakka, date and bamboo . Compos Struct 2007; 77: 288-295.

Cao Y. , Shibata S. and Fukumoto I. Mechanical properties of biodegradable composite reinforced with bagasse fibre before and after alkali treatments. Composites Part A 2006; 37: 423-429.

10.

Okubo K. and Fujii T. Eco-composites using natural fibers and their mechanical properties. In: Brebbia C and de Wilde W (eds) High performance structures and composites . Southampton: WIT Press, 2002, pp.77-85.

11.

Wambua P. , Ivens J. and Verpoest I.

Natural fibres: can they replace glass in fibre reinforced plastics?

Compos Sci Technol 2003; 63: 259-1264.

12.

Jindal UC Development and testing of bamboo-fibres reinforced plastic composites. J Compos Mater 1986; 20(1): 19-29.

13.

Wielage B. , Lampke T. , Marx G. , Nestler K. and Starke D. Thermogravimetric and differential scanning calorimetric analysis of natural fibres and polypropylene. Thermochim Acta 1999; 337: 169-177.

14.

Jayamol G. and Thomas S. Short fibre-reinforced plastics composites. In: Cheremisinoff N (ed.) Handbook of Engineering Polymeric Materials. New York: Marcel Dekker Publisher, 1997, pp.811-837.

15.

Gassan J. and Bledzki A. Possibilities for improving the mechanical properties of jute/epoxy composites by alkali treatment of fibres. Compos Sci Technol 1999; 59: 1303-1309.

16.

Van De Weyenberg I. Flax fibres as reinforcement for epoxy composites. PhD Thesis, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Katholieke Universiteit Leuven, 2005.

17.

Rong M. , Zhang M. , Liu Y. , Yang G. and Zeng M. The effect of fibre treatment on the mechanical properties of unidirectional sisal - reinforced epoxy composites. Compos Sci Technol 2001; 61: 1437-1447.

18.

Das M. , Pal A. and Chakraborty D. Effects of mercerization of bamboo strips on mechanical properties of unidirectional bamboo-novolac composites. J Appl Polym Sci 2006; 100: 238-244.

19.

Mukherjee P. and Satyanarayana K. Structure and properties of short vegetable fibres, Part 1: Sisal fibre. J Mater Sci 1984; 19: 3925-3934.

20.

Trujillo EE , Osorio L. , Fuentes C. , Van Vuure A. and Verpoest I. Bamboo fibre thermoplastic for transport applications. In: Proceedings of SAMPE Europe 31 International Technical Conference and Forum, Paris, April, 2010.

21.

Liese W. The anatomy of bamboo culms. INBAR Technical Report No. 18, International Network for Bamboo and Rattan , 1998; p.204.

22.

Tono T. and Ono K. The layered structure and its morphological transformation by acid treatment . J Jpn Wood Res Soc 1962; 8: 245-249.

23.

Parasmewaran N. and Liese W. On the fine structure of bamboo fibres. Wood Sci Technol 1976; 10: 231-246.

24.

Parasmewaran N. and Liese W. Ultrastructural aspects of bamboo cells. Cellul Chem Technol 1980; 14: 587-609.

25.

Murphy R. and Alvin K. Variation in fibre wall structure of bamboo. IAWA Bulletin 1992; 13: 403-410.

26.

Liese W. Anatomy and properties of bamboo. Bamboo Workshop, Hangzhou, 1985, pp.196-207.

27.

Ciro H. , Osorio J. and Restrepo J. Determinación de la resistencia mecánica a tensión y cizalladura de la Guadua angustifolia kunth. Revista Facultad Nacional de Agronomía 2005; 58(1): 2709-2715.

28.

Dieu T. , Liem N. , Mai T. and Tung N. Study on fabrication of BMC laminates based on unsaturated polyester resin reinforced by hybrid bamboo/glass fibres. JSME Int J, Ser A 2004; 47(4): 570-573.

29.

Liese W. and Grosser D. Untersuchungen zur Variabilität der Faserlänge bei Bambus. Holzforsch. Holzverwert 1972; 26: 202-210.

30.

Londoño X. , Camayo G. , Riano N. and López Y. Characterization of the anatomy of Guadua angustifolia (Poaceae: Bambusoideae) culms. Bamboo Sci Cult: J Am Bamboo Soc 2002; 16: 18-31.

31.

Deshpande A. , Rao C. and Rao L. Extraction of bamboo fibres and their use as reinforcement in polymeric composites. J Appl Polym Sci 2000; 76: 83-92.

32.

Jain S. , Kumar R. and Jindal U. Mechanical behaviour of bamboo and bamboo composite. J Mater Sci 1993; 27: 598-604.

33.

Okubo K. , Fujii T. and Yamamoto Y. Development of bamboo-based polymer composites and their mechanical properties . Composites Part A 2004; 35: 377-383.

34.

Thwe M. and Liao K. Environmental effects on bambooglass/polypropylene hybrid composites. J Mater Sci 2003; 38: 363-376.

35.

Tanaka R. Development of a pleasure boat using bamboo fibre reinforced plastics. In: Proceedings of ICCM-16 Conference, Kyoto, July, 2007.

36.

Londoño X. La Guadua un bambú importante de America. In: Proceedings of First Bamboo Seminar, Ecuador, 2001, pp.12-18.

37.

Young S. and Judd W. Systematics of the Guadua angustifolia complex (Poaceae: Bambusoideae). Ann Mo Bot Gard 1992; 79(4): 737-769.

38.

Londoño X. A decade of observations of a Guadua angu stifolia plantation in Colombia. J Am Bamboo Soc 1998; 12: 37-42.

39.

Riaño N. , Londoño X. , López Y. and Gómez J. Plant growth and biomass distribution on Guadua angustifolia Kunth in relation to ageing in the Valle del Cauca - Colombia. J Am Bamboo Soc 2002; 16(1): 43-51.

40.

Moreno L. , Osorio L. and Trujillo E. Estudio de las propiedades mecánicas de los haces de fibra de Guadua angustifolia. Revista Ingeniería & Desarrollo 2006; 20: 125-133.

41.

Shin F. , Shin F. G, Xian J. , Zheng W. and Yipp M. Analyses of the mechanical properties and microstructure of bamboo-epoxy composites . J Mater Sci 1989; 24: 3483-3490.

42.

Jain S. , Kumar R. and Jindal U. Mechanical behaviour of bamboo and bamboo composite. J Mater Sci 1992; 27: 4598-4604.

43.

Varada R. Void content, density, weight reduction and mechanical properties of short bamboo fibres/styrenated polyester composites. J Bamboo Rattan 2003; 2: 95-102.

44.

Shito T. , Okubo K. and Fujii T. Development of eco-composites using natural bamboo fibres and their mechanical properties. In: Brebbia C and de Wilde W (eds) High performance structures and composites . Southampton: WIT Press, 2002, pp.175-182.

45.

Katayama T. , Tanaka T. , Suzuki Y. , Nagai S. and Aoyama E. Study on injection molding of bamboo fiber reinforced thermo-plastics. In: Brebbia C and de Wilde W (eds) High performance structures and composites . Southampton: WIT Press, 2002, pp.87-96.

46.

Kumar H, Siddaramaiah and Roopa S. Study of chemical and tensile properties of polyurethane and polyurethane/ polyacrylonitrile coated bamboo. J Reinf Plast Compos 2005; 24(2): 209-213.

47.

Shibata S. and Fukumoto I. Effects of bamboo and kenaf fibres on the flexural modulus of bio-composites . Department of Mechanical Systems Engineering, University of the Ryukyus, Okinawa, Japan, 2004, pp.14-17.

48.

Takagi H. and Ichihara Y. Effect of length on mechanical properties of ‘‘green’’ composites using a starch-based resin and short bamboo fibers. JSME Int J, Ser A 2004; 47(4): 551-555.

49.

Defoirdt N. , Biswas S. , De Vrieze L. , Tran N. , Ahsan Q. , Van Vuure A. , et al. Assessment of the tensile properties of coir, bamboo and jute fibre. Composites Part A 2010; 41: 588-595.