Bi Odegradability of Polyvinyl Alcohol in Sand for Resin Bonded Sand Casting Process
Abstract
Resin bonded sand casting is widely used for manufacturing automotive parts, especially those made of aluminium alloys. In general, resin bonded sand casting use alkaline resin as binding agent. Typically, they are from non-biodegradable materials that have issues on reclamation and disposal of the sand as well as cause hazard to the environment. Therefore, a biodegradable resin consisting of Polyvinyl Alcohol (PVA) as one of the solution contents was developed to substitute the non-environmental friendly resin. The purpose of this investigation is to attest that PVA is a biodegradable material under natural environment. Weight loss quantification was used as a method to study the biodegradability of PVA and Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy were used to examine the molecular bonding as well as the morphological structure of the resin after biodegradation. The degradation process was evaluated by the weight loss and molecular structure of the PVA. At the end of this study, the weight loss of PVA is insignificant to show the biodegradation process. However, further investigation using FTIR and Raman spectroscopy methods; it is observed that there is a significant change in molecular and morphological structure of PVA.
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N.I.S. Hussein, M.N. Ayof and N.I. Mohd Sokri, “Mechanical properties and loss on ignition of phenolic and furan resin bonded sand casting”, Journal of Mining, Metallurgy and Mechanical Engineering, vol. 1, no. 3, pp. 223-227, 2013.
A. Ghandini, Biopolymers – New Materials for Sustainable Films and Coatings. Denmark: Wiley, 2011.
E. Chiellini, A. Corti and R. Solaro, “Biodegradation of polyvinyl alcohol based blown films under different environmental conditions”, Polymer Degradation and Stability, vol. 64, no. 2, pp. 305-312, 1999.
M. Kolybaba, L.G. Tabil, S. Panigrahi, W.J. Crerar, T. Powell and B. Wang, “Biodegradable polymers: past, present, and future”, in CSAE/ASAE Annual Intersectional Meeting, Fargo, North Dakota, 2003, pp. 1-15.
S.K. Mohan and T. Srivastava, “Microbial deterioration and degradation of polymeric materials”, Journal of Biochemistry and Technology, vol. 2, no. 4, pp. 210-215, 2010.
R. Premraj and D. Mukesh, “Biodegradation of polymers”, Indian Journal of Biotechnology, vol. 4, pp. 186-193, 2005.
E. Rudnik, Compostable Polymer Materials. Amsterdam: Elsevier, 2008.
B. Grabowska, M. Bulwan, S. Zapotoczny and G. Grabowski, “Biodegradation of new polymer foundry binders composition of poly(acrylic acid)/dextrin”, Polymers, vol. 57, no. 7-8, pp. 529-534, 2012.
M. Chandra and S.K. Roy, Industrial Polymers. Specialty Polymers, And Their Applications. Boca Raton: CRC Press, Taylor & Francis Group, 2009.
G. Paradossi, F. Cavalieri, E. Chiessi, C. Spagnoli and M.K. Cowman, “Poly(vinyl alcohol) as versatile biomaterial for potential biomedical applications”, Journal of Material Science: Material in Medicine, vol. 14, no. 8, pp. 687-691, 2003.
C.M. Hassan and N.A. Preppas, “Structure and applications of poly(vinyl alcohol) hydrogels produced by conventional crosslinking or by freezing/thawing methods”, Advanced in Polymer Science, vol. 153, pp. 37-65, 2000.
K. Leja and G. Lewandowicz, “Polymer biodegradation and biodegradable polymers – a review”, Polymer Journal of Environmental Studies, vol. 19, no. 2, pp. 255-266, 2010.
D. Rong, K. Usui, T. Morohoshi, N. Kato and M. Zhou, “Symbiotic degradation of polyvinyl alcohol by novosphingobium sp. and xanthobacter flavus”, Journal of Environmental Biotechnology, vol. 9, no. 2, pp. 131-134, 2009.
N.A. Azahari, N. Othman and H. Ismail, “Biodegradation studies of polyvinyl alcohol/corn starch blend films in solid and solution media”, Jounal of Physics Science, vol. 22, no. 2, pp. 15-31, 2011.
F. Kawai, “The biochemistry and molecular biology of xenobiotic polymer degradation by microorganisms”, Biosciece, Biotechnology and Biochemistry, vol. 74, pp. 1743-1759, 2010.
A. Campos, J.C. Marconato and S.M. Martins-Franchetti, “Biodegradation of blend films pva/pvc, pva/pcl in soil and soil with landfill leachate”, International Journal Brazilian Archives of Biology and Technology, vol. 54, no. 6, pp. 1367-1378, 2011.
N. Tudorachi, C. Cascaval, M. Rusu and M. Pruteanu, “Testing of polyvinyl alcohol and starch mixtures as biodegradable polymeric materials”, Polymer Testing, vol. 19, no. 7, pp. 785–799, 2000.
O. Nadras, N.A. Azahari and H. Ismail, “Thermal properties of polyvinyl alcohol (pvoh)/corn starch blend film”, Malaysia Polymer Journal, vol. 6, no. 6, pp. 147-154, 2011.
D. Cetin and S. Citak, “Degradation of polyvinyl alcohol by a mixed microbial culture isolated from paper mill treatment”, Gazi University Journal of Science, vol. 27, no. 2, pp. 839-845, 2014.
S. Choi, T.W. Fermanian and L.A. Spomer, “Effect of temperature, moisture, and soil texture on dcpa degradation”, Agronomy Jornal, vol.80, pp. 108–113, 1988.
M. Shimao, “Biodegradation of Plastics”, Current Opinion in Biotechnology, vol. 12, No. 3, pp. 242-247, 2001.
J.M. Rolf, Biopolymers - Biodegradability of Polymers: Regulations and Methods for Testing. Munster: Wiley, 2004.
B. Bharathiraja, J. Jayamuthunagai, M. Jayakumar, P.V. Arulkirubakaran, M. Chandran and P. Praveen Kumar, “Biodegradation of polyvinyl alcohol using pseudomonas alcaligenes”, Asian Journal of Chemistry, vol. 25, no. 15, pp.1-5, 2013.
