Low Temperature Grafting of MMA on to Coir Fibre
Abstract
Low temperature grafting of methyl methacrylate (MMA) on to coir fibre was carried out in aqueous medium using Potassium per sulphate (PPS) as an initiator under the catalytic influence of Ferrous ammonium sulphate (FAS). Optimization of various parameters of grafting viz. monomer, initiator and catalyst concentration, time and temperature was carried out to obtain the maximum tensile properties. Evidence of grafting was characterized from Fourier Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermal analysis (TGA). The maximum breaking stress (BS) of control and grafted coir fibre were 213.08 and 365.00 N/mm2 respectively. Hence the percentage of improvement of grafted coir fibre was found to be 71.30%. Increase in tensile properties with maximum BS observed under monomer (25%), initiator (0.75%) and catalyst (0.75%) concentration, time (150min) and temperature (500C) respectively. The t-test and Analysis of variance (ANOVA) were studied for statistical significance and the P values obtained were less than 0.05 which revealed that the value was highly significant for the improvement of mechanical strength on coir fibre by graft Co- polymerization.
References
Balamurugan, A., Kannan, S., Selvaraj, V. and Rajeswari, S. 2004. Development and Spectral Characterization of Poly (Methyl Methacrylate) /Hydroxyapatite Composite for Biomedical Applications. Trends Biomater. Artif. Organs, Vol. 18 (1), 41-45.
Jayaraj A.P., Anitha Das Ravindranath and U.S. Sarma. 2014. Nanocellulose from diseased coconut wood. Cord 30 (1), 1-10.
Jogeswari R., Manjusri M. and Amar K.M. 1999. Surface Modification of Coir Fibers I: Studies on Graft Copolymerization of Methyl Methacrylate on to Chemically Modified Coir Fibers. Polym. Adv. Technol. 10: 336-344.
Kaith, V.S and S. Kalia. 2008. Graft Copolymerization of MMA on to flax under different reaction conditions: a comparative study. eXPRESS Polymer Letters 2(2): 93-100.
Khullar, R., V.K. Varshney., S. Naithani and P.L. Soni. 2008. Grafting of acrylonitrile on to cellulosic material derived from bamboo (Dendrocalamus strictus). eXPRESS Polymer Letters 2 (1): 12-18.
Ott E, Spurline H M & Graffin M W, 1954. Cellulose and cellulose derivatives, Part II (Interscience, Newyork), 863
Renu S., S Vashistha and S. Kalia. 2010. Biologically and chemically modification of ramie fibers: A comparative study. International Conference on Advance in polymer Technology.239
Salam, M.A. 2005. Graft co polymerization of methyl acrylonitrile monomer on to sulfonated jute- cotton blended fabric. J. Textile and Apparel technology and Management 4(4).
Singha, A.S., S. Anjali and V.K. Thakur. 2007. Pressure induced graft copolymerization of acrylonitrile on to Saccharum cilliare fibre and evaluation of some properties of grafted fibre. Bull. Master. Sci. 31(1):7-13.
Singha A.S and Raj K.R. 2010. Graft Copolymerization of Methyl Methacrylate (MMA) onto Agave americana Fibers and Evaluation of their Physicochemical Properties. International Journal of Polymer Analysis and Characterization 11(1):27-42.
Zuraida, A., S. Norshahida., Sopyan and H. Zahurin. 2011. Effect of fibre length variation on mechanical and physical properties of coir fibre reinforced cement-albumin composite (CFRCC). J. IIUM Engineering 12(1).
