COMPARISON OF MANGANESE LAURATE, MANGANESE PALMITATE AND MANGANESE STEARATE ON ACCELERATING DEGRADATION OF HDPE DURING NATURAL WEATHERING
DOI:
https://doi.org/10.11113/jt.v79.10533Keywords:
HDPE degradation, natural weathering, manganese laurate, manganese palmitate, manganese stearateAbstract
High density polyethylene (HDPE) degradation has been studied. In this study, HDPE was incorporated with manganese laurate, manganese palmitate and manganese stearate as pro-oxidant additives. Preparation of samples were conducted by adding the HDPE resin with pro-oxidant additives in the range of 0-1.0 wt %. A twin screw extruder was employed prior to the injection molding technique. Samples were subjected to natural weathering for the maximum duration of 24 weeks. Assessments on the change of the properties of samples after natural weathering treatment were conducted by FTIR analysis, tensile testing and average molecular weight analysis. In term of their capabilities to accelerate degradation of HDPE, manganese stearate exhibited more influence than manganese laurate and manganese palmitate. The carbonyl group’s peak arises as a result of oxidation during the treatment as revealed by FTIR traces. Samples with pro-oxidant additives shows a loss of their strain at break. The amount of pro-oxidant additives increases the degradation of samples.References
Khedri, S. and Elyasi, S. 2016. Kinetic Analysis for Thermal Cracking of HDPE: A new isoconversional approach. Polymer Degradation and Stability. 129: 306-318.
Rahim, R. and Abdul Raman, A. A. 2017. Carbon Dioxide Emission Reduction through Cleaner Production Strategies in a Recycled Plastic Resins Producing Plant. Journal of Cleaner Production. 141: 1067-1073.
Krueger, M. C., Harms, H. and Schlosser, D. 2015. Prospects for Microbiological Solutions to Environmental Pollution with Plastics. Applied Microbiology and Biotechnology. 99(21): 8857-8874.
Restrepo-Flórez, J. M., Bassi, A. and Thompson, M. R. 2014. Microbial Degradation and Deterioration of Polyethylene – A Review. International Biodeterioration & Biodegradation. 88: 83-90.
Pablos, J. L., Abrusci, C., MarÃn, I., López-MarÃn, J., Catalina, F., EspÃ, E. and Corrales, T. 2010. Photodegradation of Polyethylenes: Comparative Effect of Fe And Ca-Stearates as Pro-oxidant Additives. Polymer Degradation and Stability. 95(10): 2057-2064.
Abrusci, C., Pablos, J. L., MarÃn, I., EspÃ, E., Corrales, T. and Catalina, F. 2013. Comparative Effect of Metal Stearates as Pro-oxidant Additives on Bacterial Biodegradation of Thermal- and Photo-degraded Low Density Polyethylene Mulching Films. International Biodeterioration & Biodegradation. 83: 25–32.
Abrusci, C., Pablos, J. L., Corrales, T., López-MarÃn, J., MarÃn, I. and Catalina, F. 2011. Biodegradation of Photo-degraded Mulching Films Based on Polyethylenes and Stearates of Calcium and Iron as Pro-oxidant Additives. International Biodeterioration & Biodegradation. 65(3): 451-459.
Jakubowicz, I. 2003. Evaluation of Degradability of Biodegradable Polyethylene (PE). Polymer Degradation and Stability. 80(1): 39-43.
Bikiaris, D., Prinos, J. and Panayiotou, C. 1977. Effect of Methyl Methacrylate-butadiene-styrene Copolymer on the Thermooxidation and Biodegradation of LDPE/Plasticized Starch Blends. Polymer Degradation and Stability. 58(1-2): 215-228.
Roy, P. K., Surekha, P., Rajagopal, C. and Choudhary, V. 2006. Effect of Cobalt Carboxylates on the Photo-oxidative Degradation of Low-density Polyethylene. Part-I. Polymer Degradation and Stability. 91(9): 1980-1988.
Sheikh, N., Akhavan, A., Naimian, F., Khoylou, F., Hassanpour, S. and Sohrabpour, M. 2006. Formulation of a Photosensitized Polyethylene Film; Its Structure and Property Variation Under the Weathering Conditions of Tehran. Journal of Polymers and the Environment. 14(1): 103-109.
Ojeda, T., Freitas, A., Birck, K., Dalmolin, E., Jacques, R., Bento, F. and Camargo, F. 2011. Degradability of Linear Polyolefins Under Natural Weathering. Polymer Degradation and Stability. 96(4): 703-707.
Hung, K. C., Chen, Y. L. and Wu, J. H. 2012. Natural Weathering Properties of Acetylated Bamboo Plastic Composites. Polymer Degradation and Stability. 97(9): 1680-1685.
Zou, P., Xiong, H., and Tang, S. 2008. Natural Weathering of Rape Straw Flour (RSF)/HDPE and Nano-SiO2/RSF/HDPE Composites. Carbohydrate Polymers. 73(3): 378-383.
Sam, S. T., Ismail, H. and Ahmad Z. 2011. Effect of Cobalt Stearate on Natural Weathering of LLDPE/Soya Powder Blends. Polymer-Plastic Technology and Engineering. 50(9): 957-968.
Maryudi, Yunus, R. M., Nour, A. H. and Abidin, M. H. 2009. Synthesis and Characterization of Manganese Carboxylates Journal of Applied Science. 9(17): 3156-3160.
Maryudi, Hisyam, A., Yunus, R. M. and Beg, M. D. H. 2013. Thermo-oxidative Degradation of High Density Polyethylene Containing Manganese Laurate. International Journal of Engineering Research and Applications. 3(2): 1156-1165.
Khabbaz, F., Albertsson, A.-C. and Karlsson, S. 1999. Chemical and Morphological Changes of Environmentally Degradable Polyethylene Films Exposed to Thermo-Oxidation. Polymer Degradation and Stability. 63(1): 127-138.
Andrady, A. L., Hamid, H. S. and Torikai, A. 2003. Effects of Climate Change and UV-B on Materials. Photochemical & Photobiological Sciences. 2(1): 68-72.
Kurata, M. and Tsunashima, Y. 1999. Viscosity-Molecular Weight Relationships and Perturbed Dimensions of Linear Chain Molecules. In Bandrup, J. et al. (ed.) Polymer Handbook. Toronto: John Wiley and Sons Inc.
Basfar, A. A. and Idriss Ali, K. M. 2006. Natural Weathering Test for Films of Various Formulations of Low Density Polyethylene (LDPE) and Linear Low Density Polyethylene (LLDPE). Polymer Degradation and Stability. 91(3): 437-443.
General Climate of Malaysia - Malaysian Meteorological Department. [Online]. Available: http://www.met.gov.my/en/web/metmalaysia/education/climate/generalclimateofmalaysia. [Accessed: 18-Mar-2016].
Hamid, S., Amin, M. and Maadhah, A. 1992. Handbook of Polymer Degradation. New York: Marcel Dekker.
Andrady, A., Hamid, S., Hu, X. and Torikai, A. 1988. Effects of Increased Solar Ultraviolet Radiation on Materials. Journal of Photochemistry and Photobiology B: Biology. 46(1-3): 96-103.
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