The Effect of Addition of Dioctyl Terephthalate and Calcite on the Tensile Properties of Organoclay/Linear Low Density Polyethylene Nanocomposites

Authors: A. Gürses, Z. Eroğlu, E. Şahin, K. Güneş, Ç. Doğar

Abstract:

In recent years, polymer/clay nanocomposites have generated great interest in the polymer industry as a new type of composite material because of their superior properties, which includes high heat deflection temperature, gas barrier performance, dimensional stability, enhanced mechanical properties, optical clarity and flame retardancy when compared with the pure polymer or conventional composites. The investigation of change of the tensile properties of organoclay/linear low density polyethylene (LLDPE) nanocomposites with the use of Dioctyl terephthalate (DOTP) (as plasticizer) and calcite (as filler) has been aimed. The composites and organoclay synthesized were characterized using the techniques such as XRD, HRTEM and FTIR techniques. The spectroscopic results indicate that platelets of organoclay were well dispersed within the polymeric matrix. The tensile properties of the composites were compared considering the stress-strain curve drawn for each composite and pure polymer. It was observed that the composites prepared by adding the plasticizer at different ratios and a certain amount of calcite exhibited different tensile behaviors compared to pure polymer.

Keywords: Linear low density polyethylene, nanocomposite, organoclay, plasticizer.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1127320

References:

[1] K. G. Sharp, “Inorganic/Organic Hybrid Materials” Adv Mater, vol. 10, no.15, pp.1243–1248, 1998.
[2] P. Uthirakumar, M.-K. Song, C. Nah, Y.-S. Lee, “Preparation and characterization of exfoliated polystyrene/clay nanocomposites using a cationic radical initiator-MMT hybrid” European Polymer Journal vol.41 pp.211–217,2005.
[3] P. Giannelis, R. Krishnamoorti, E. Manias, “Polymer–silicate nanocomposites: model systems for confined polymers and polymer brushes” Adv. Polym. Sci vol. 138 pp.107–47, 1999.
[4] P. C. Le Baron, Z. Wang, T. J.Pinnavaia, “Polymer-layered silicate nanocomposites: an overview” Appl. Clay Sci vol 15 pp.11–29, 1999.
[5] Durmuş, M. Woo, A. Kaşgöz, C. W. Macosko, M. Tsapatsis, “Intercalated linear low density polyethylene (LLDPE)/clay nanocomposites prepared with oxidized polyethylene as a new type compatibilizer: Structural, mechanical and barrier properties” Eur. Polym. J vol. 43 no.9, pp. 3737-3749, 2007.
[6] L. Tyan, Y.C. Liu, K. H. Wei, “Effect of reactivity of organics-modified montmorillonite on the thermal and mechanical properties of montmorillonite/polyimide nanocomposites” Chem. Mater vol. 13 no.1, pp.222–226, 2001.
[7] J. W. Gilman, C.L. Jackson, A. B. Morgan, R. J. Hayis, E. Manias, E. P. Giannelis, M. Hilton, D. Wuthenow, S. H. Phillips, “Flammability properties of polymer-layered-silicate nanocomposites. Polypropylene and polystyrene nanocomposites” Chem. Mater. vol. 12 no.7, pp. 1866–1873, 2000.
[8] T. Lan, Kaviratna, P.D., Pinnavaia, T. J., “On the nature of polyimide–clay hybridcomposites” Chem. Mater vol. 6, pp.573–575, 1994.
[9] Y. H. Yu, J. M. Yeh, S. J. Liou, C. L. Chen, D. J. Liaw, H. Y. Lu, “Preparation and properties of polyimide–clay nanocomposite materials for anticorrosion application” J. Appl. Polym. Sci vol. 92 no.6, pp.3573–3582, 2004.
[10] S. P. Liu, L. C. Tu, “Studies on mechanical properties of dispersing intercalated silane montmorillonite in low density polyethylene matrix” Int. Commun. Heat Mass Transfer, vol. 38 no. 7, pp. 879-886, 2011.
[11] S.M. Zebarjad, S.A. Sajjadi, M. Tahani, A. Lazzeri, “A study on thermal behaviour of HDPE/CaCO3 nanocomposites” Journal of Achievements in Materials and Manufacturing Engineering vol.17 no.1-2, pp.173-176, 2006.
[12] Wypych, Handbook of Plasticizers Canada: ChemTec Publishing, 2004, ch. 2.
[13] N. A. V. Mera, “Encapsulation Stimuli-Responsive Molecules for the Preparation of Photofunctional Materials” Ph. D. Thesis, Autonomous University of Barcelona, Spain, 2015.
[14] M. K. Wang, S. L. Wang, W. M. Wang, Soil Sci. Soc. Am. J. 60 (1) (1996) 138–141.
[15] M. A. Pérez, B. L. Rivas, K. A. Garrido-Miranda, V. H. C. Requena, M. Martínez, J. Castaño, Á. Maldonado, “Low Density Polyethylene (LDPE) Nanocomposites With Passive And Active Barrier Properties” J. Chil. Chem. Soc., vol. 59 no. 2, pp. 2442-2446, 2014.
[16] F. Liu, J. Chen, Z. Li, P. Ni, Y. Ji, Q.Meng, “Alcoholysis of poly(ethylene terephthalate) to produce dioctyl terephthalate with sub- and super-critical isooctyl alcohol” Journal of Analytical and Applied Pyrolysis vol. 99, pp. 16-22, 2013.
[17] S. Liu, L. Zhou, L Li, S. Yu, F. Liu, C. Xie, Z. Song, “Isooctanol alcoholysis of waste polyethylene terephthalate in acidic ionic liquid” J Polym Res vol. 20, pp. 310- 316, 2013.
[18] K. Khezri, V. Haddadi-Asl, H. Roghani-Mamaqani, M. Salami-Kalajahi, “Effect of MCM-41 nanoparticles on ARGET ATRP of styrene: Investigating thermal properties” J. Polym. Eng. vol. 32, pp. 235–243, 2012.
[19] R. H. P. Devamani, N. Deepa, J. Gayathri, “Morphology and Thermal Studies of Calcium Carbonate Nanoparticles” International Journal of Innovative Science, Engineering & Technology, vol. 3, no.1, pp.87-89, 2016.
[20] İ. Özen, S. Şimşek, “Vital importance of moisture level in all stages of processing from calcium carbonate coating through polyethylene/calcium carbonate compounding to film generation” Powder Technology vol. 270, pp.320–328, 2015.
[21] W. G. Lee, Y. H. Zheng, C. B. Park, M. Kontopoulou, “Effects of Clay Dispersion on the Mechanical Properties and Flammability of Polyethylene/Clay Nanocomposites”, SPE ANTEC Tech. Papers 63, pp. 1428-1432, 2005.
[22] M. López-Quintanilla, S. Sánchez-Valdés, L. Ramos de Valle, R. G. Miranda, “Preparation and mechanical properties of PP/PP-g-MA/Org-MMT nanocomposites with different MA content”, Polymer Bull., vol. 57, pp.385–393, 2006.
[23] Chen, X. Li, Y. Wang, K. Li, J. Huang, J. Jiang, X. Nie, “Synthesis and application of a novel environmental plasticizer based on cardanol for poly(vinyl chloride)”, J. Taiwan Inst. Chem. E., vol. 65, pp. 488-497, 2016.
[24] A. Gürses, M. Ejder (Korucu), Ç. Dogar, “Preparation of PEO/Clay nanocomposites by using organo-clay produced via micellar adsorpsion of CTAB”, The ScientificWorld Journal, vol. 2012, Article ID 270452, 8 pages, 2012.