Physico-Mechanical Properties of Chemically Modified Sisal Fibre Reinforced Unsaturated Polyester Composites

Sisal leaves were subjected to enzymatic retting
method to extract the sisal fibre. A portion of the fibre was pretreated
with alkali (NaOH), and further treated with benzoyl chloride
and silane treatment reagents. Both the treated and untreated Sisal
fibre composites were used to fabricate the composite by hand lay-up
technique using unsaturated polyester resin. Tensile, flexural, water
absorption, density, thickness swelling and chemical resistant tests
were conducted and evaluated on the composites. Results obtained
for all the parameters showed an increase in the treated fibre
compared to untreated fibre. FT-IR spectra results ascertained the
inclusion of benzoyl and silane groups on the fibre surface. Scanning
electron microscopy (SEM) result obtained showed variation in the
morphology of the treated and untreated fibre. Chemical modification
was found to improve adhesion of the fibre to the matrix, as well as
physico-mechanical properties of the composites.




References:
[1] M. Y., Hashim, M. N., Roslan, A. M. Amin, A. Mujahid, Zaidi, A. S.
Ariffin (2012) Mercerization Treatment Parameter, Effect on Natural
Fibre Reinforced Polymer Matrix Composite: A Brief Review, World
Academy of Sci., Eng. and Tech, 68: 1638-1644.
[2] S. S. David (2005) Plants and Their Uses: Fibres from plants. Integrative
Biology, 1-363. Retrieved from http.//www.life.illinois.edu [3] K. Rakesh O. Sangeeta S. Aparna (2011) Chemical Modifications of
natural fiber for composite material Pelagia Research Library. Der
Chemica Sinica, 2(4): 219-228.
[4] M.C., Uma, R. K., Obi, E., Muzenda, and M., Shukla, (2012) Effect of
Surface Treatment on Performance of Tamarind Fibre-Epoxy
Composites, International Conference on Innovation in Chemical
Engineering and Medical Science, (ICICEMS 2012) Dec 26-27, 2012,
Dubai. 16-19.
[5] D. N., Saheb, and J. P., Jog, (1999) Natural Fibre Polymer Composites:
A Review. Advances in Polymer Technology, 18(4): 351-363, John Wiley
and sons, Inc.
[6] S. L., Favaro, T. A., Ganzerli, de Carvalho, A.G.V., Neto, O.R.R.F., da
Silva, and E. Radovanovic, (2010) Chemical, Morphological and
Mechanical Analysis of Sisal Fibre-reinforced Recycled High Density
Polyethylene Composites, Express polymer letters. 4(8): 465-473.
[7] G., Velmurugan, D., Vadivel, R., Arravind, S. P., Vengatesan, A.
Mathiazhagan, (2012) Tensile Test Analysis of Natural Fibre Reinforced
Composite. Int. J. Mech. Indust. Eng. (IJMIE). 2(4): 2231-6477.
[8] K., Joseph, L. H. C., Mattoso, and R. D., Toledo, (2000) Natural Fibre
Reinforced Thermoplastic Composites. Natural Polymers and Agrofibre
Composites, chapter 4,159-20.
[9] S., Kalia, V. K., Kanshuk and R. K., Sharma, (2011) Effect of
Benzoylation and Graft Copolymerization on Morphology, Thermal
Stability and Crystallinty of Sisal Fibre J. Nat. fib, 8(1): 27.
[10] M. A., Nurulmunirah, and A. Ishak, (2012) Effect of Chemical
Treatment on Mechanical and Water-Sorption Properties, Coconut
Fibre-Unsaturated. fibre/epoxy composites, Asian J. of Nat. and Applied
Sci., 2(1): 39-49.
[11] R. D., Chitta, (2010) Preparation and Characterization of Polymer
Matrix Composite Using Natural Fibre Lantana-camara, unpublished
Phd Thesis in Mech. Eng, National Inst. of Tech, Rourkela, 35-70.
[12] R., Exequiels, and V. Analia, (2006) Alkali Treatment of Jute Fabrics:
Influence on the Processing Conditions and Mechanical Properties of
their Composites, 8th Int. Conf. on Flow Process in Comp. Mat.
(FPCM8)., Douai, France., 105-11.
[13] B., Wang, S., Panigrahi, L. G., Tabil, and W. Crerar, (2004) Effects of
Chemical Treatments on Mechanical and Physical Properties of Flax
Fibre-Reinforced Rotationally Molded Composites. ASAE Annual
Meeting, Paper No. 046083.
[14] H. P. S., Abdulkhalil M., Jawaid and A. Abubakar, (2011) Woven
Hybrid Composites: Water Absorption and Thickness Swelling
Behaviours, BioResources, 6(2): 1043.
[15] N. P. G., Suardana, P., Yingjun, and K. L., Jae, (2011) Mechanical
Properties of Hemp Fibre Composites: Effects of Chemical Surface
Treatments. Mat. Physic and Mech., 11:1-8.
[16] S. S., Suradi, R. M., Yunus, M. D. H., Beg and Z. A. M., Yusof, (2009)
Influence Pre-treatment on the Properties of Lignocellulose Based
Biocomposite, Nat. Conf. on Postgradt. Res. (NCON-PGR), 67-78.