Characterization and Degradation Analysis of Tapioca Starch Based Biofilms
In this study, tapioca starch, which acts as natural polymer, was added in the blend in order to produce biodegradable product. Low density polyethylene (LDPE) and tapioca starch blends were prepared by extrusion and the test sample by injection moulding process. Ethylene vinyl acetate (EVA) acts as compatibilizer while glycerol as processing aid was added in the blend. The blends were characterized by using melt flow index (MFI), fourier transform infrared (FTIR) and the effects of water absorption to the sample. As the starch content increased, MFI of the blend was decreased. Tensile testing were conducted shows the tensile strength and elongation at break decreased while the modulus increased as the starch increased. For the biodegradation, soil burial test was conducted and the loss in weight was studied as the starch content increased. Morphology studies were conducted in order to show the distribution between LDPE and starch.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1089305Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF
 C. A. Albertsson, and S. Karlsson, "Degradable Polymers for the Future,” Acta Polymerica, vol. 46(2), pp 114-123, 1995.
 R. R. N. Sailaja, "Mechanical properties of esterified tapioca starch-LDPE blends using LDPE-co-glycidyl methacrylate as compatibilizer”, Polymer International, vol. 54 (2), pp 286-296, 2005.
 R. R. N. Sailaja, and M. Chanda, "Use of poly(ethylene-co-vinyl alcohol) as compatibilizer in LDPE/thermoplastic tapioca starch blends,” Journal of Applied Polymer Science, vol. 86 (12), pp 3126-3134, 2002
 W. A. R Wan Aizan, R. A. Roshafima, T. Jamarosliza, M. Ida Idayu, "Production and applications of biobased packaging material for food industry,” Food Additives and Contaminant. Latin America. vol.19, pp 172-177, 2009.
 S. Chuayjuljit, S. Hosililak and A. Athisart, "Thermoplastic Cassava Starch/Sorbital-Modified Montmorillonite Nanocomposites Blended with Low Density Polyethylene: Properties and Biodegradability study,” Journal of Metals, Materials and Minerals, vol. 19 (1), pp 59-65, 2009.
 H. M. Park, S.-R. Lee, R. Subhendu, R. Chowdhury, T. K. Kang., H. K. Kim, S. H. Park, C. S. Ha, "Tensile properties, morphology, and biodegradability of blends of starch with various thermoplastics,” Journal of Applied Polymer Science, vol. 86 (11), pp 2907-2915, 2002.
 M. Sabetzadeh, R. Bagheri and M. Masoomi, "Effect of corn starch content in thermoplastic starch/low-density polyethylene blends on their mechanical and flow properties,” Journal of Applied Polymer Science, vol. 126, pp 63-69, 2012.