Functionalized Low Density Polyethylene with Maleinized Hyperbranched Polyester Polyol

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Carlos A Ararat
Edwin A. Murillo


low density polyethylene, hyperbranched polyester, functionalization, thermal analysis, mechanical properties


In this work, low density polyethylene (LDPE) was modified in the melt state with a maleinized hyperbranched polyester polyol (HBPAM), using several proportions of dicumyl peroxide (0.5, 1.0, 1.5 and 2.0 %). Infrared analysis showed the signals of OH, C=O, -COOR and -C=C- groups of the HBPAM in the spectra of the functionalized samples (LDPE-g-HBPAM). Grafting degree (GD) was between 9.14 and 9.82 %. Melt flow index of the samples LDPE-g-HBPAM was lower than that of the LDPE, and it did not exhibit dependency on the dicumyl peroxide content and GD. Except
for the sample obtained with a 2.0 % of dicumyl peroxide, all melting temperatures of the samples of LDPE-g-HBPAM were similar to that of the LDPE. The melting enthalpy of the samples LDPE-g-HBPAM decreased with the concentration of dicumyl peroxide and GD. The tensile modulus of these samples was higher than that of LDPE, but the elongation at break was lower.


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[1] G. Rizzo and G. Spadaro, “Mechanical properties of low density polyethylene-isotactic polypropylene blends-I. Effect of mixing time,”European Polymer Journal, vol. 24, pp. 303–306, 1988. [Online]. Available:http://dx.doi./10.1016/0014-3057(88)90191-7 128

[2] S. Filippi, V. Chiono, G. Polacco, M. Paci, L. Minkova, and P. Magagnini, “Reactive compatibilizer precursors for
LDPE/PA6blends, 1.Ethylene/acrylic acid copolymers,” Macromolecular Chemistry and Physics, vol. 203, pp. 1512–1525, 2002. [Online]. Available:http://dx.doi.0.1016/S00323861(03)00133-2 128

[3] S. Filippi, L. Minkova, N. Dintcheva, P. Narduccia, and P. Magagnini,“Comparative study of different maleic anhydride grafted compatibilizer precursors towards LDPE/PA6 blends: Morphology and mechanical properties,” Polymer, vol. 46, pp. 8054–8061, 2005. [Online].
Available:http://dx.doi.10.1016/j.polymer.2005.06.090 128

[4] Y. M. Al-Roomi and K. Hussain, “Homo-oligomerization of maleic anhydride in nonpolar solvents: a kinetic study of deviations from nonlinear behavior,”Journal of Applied Polymer Science, vol. 102, pp. 3404–3412, 2006. [Online].Available: http://dx.doi.10.1002/app.22831 128

[5] E. Passaglia, S. Coiai, and S. Augier, “Control of macromolecular architecture during the reactive functionalization in the melt of olefin polymers,” Progress in Polymer Science, vol. 34, pp. 911–947, 2003. [Online].Available: http://dx.doi.10.1016/j.progpolymsci.2009.04.008 128, 129

[6] Y. Zhang, J. Chen, and H. Li, “Functionalization of polyolefins with maleic anhydride in melt state through ultrasonic initiation,”Polymer, vol. 47, pp. 4750–4759, 2006. [Online]. Available:http://dx.doi.10.1016/j.polymer.2006.04.040 128, 129

[7] E. Zagar and M. Zigon, “Aliphatic hyperbranched polyesters based on 2,2-bis(methylol)propionic acid-determination of structure, solution and bulk properties,” Progress in Polymer Science, vol. 36, pp. 53–88, 2011.[Online]. Available: http://dx.doi10.1016/j.progpolymsci.2010.08.004 129,135

[8] E. A. Murillo, A. Cardona, and B. L. López, “Rheological Behavior in the Molten State and Solution of hyperbranched polyester of fourth and fifth generation,” Journal of Applied Polymer Science, vol. 119, pp. 929–935,2011. [Online]. Available: http://dx.doi.10.1002/app.32774 129, 135

[9] E. Jeong, T. Bae, S. Yun, S. Woo, and Y. Lee, “Surface characteristics of lowdensity polyethylene films modified by oxyfluorination-assisted graft polymerization,”Colloids and Surfaces A:Physicochem. Eng. Aspects, vol. 373, pp.36–41, 2011. [Online]. Available:http://dx.doi.0.1016/j.colsurfa.2010.10.008 129

[10] E. Zagar, M. Huskic, and M. Zigon, “Structure-to-properties relationship of aliphatic hyperbranched polyesters,” Macromolecular Chemistry Physics, vol. 208, pp. 1379–1387, 2007. [Online]. Available:http://dx.doi.10.1002/macp.200600672129

[11] A. Mishra, K. Jena, and K. Raju, “Synthesis and characterization of hyperbranched polyester-urethane-urea/K10-clay hybrid coatings,” Macromolecular Chemistry Physics, vol. 64, pp. 47–56, 2009. [Online]. Available:http://dx.doi.0.1016/j.porgcoat.2008.07.012 129

[12] M. Kutyreva, G. S. Usmanova, N. Ulakhovich, and G. Kutyrev, “Polynuclear Cu (II) complexes with hyperbranched polyester carboxylates,” Russian J. of Gen. Chem, vol. 80, pp. 787–789, 2010. [Online]. Available:http://dx.doi.10.1134/S1070363210040183 129

[13] E. Murillo, P. Vallejo, and B. López, “Effect of tall oil fatty acids content on the properties of novel hyperbranched alkyd resins,” Journal of Applied Polymer Science, vol. 120, pp. 3151–3158, 2011. [Online]. Available:http://dx.doi.10.1002/app.33502 129

[14] T. Saki, “Reactive melt blending of low-density polyethylene with poly (acrylic acid),” Arabian Journal of Chemistry, vol. 8, pp. 3151–3158, 2015.[Online]. Available:
http://dx.doi.10.1016/j.arabjc.2011.05.021 129

[15] S. Singh, S. Tambe, A. Samui, and V. R. Dhirendra Kumar, “Maleic acid grafted low density polyethylene for thermally sprayable anticorrosive coatings),” Progress in Organic Coatings, vol. 55, pp. 20–26, 2006. [Online].Available: http://dx.doi.10.1016/j.porgcoat.2005.09.007 129

[16] D. Clark,W. Baker, and R.Whitney, “Peroxide-initiated comonomer grafting of styrene and maleic anhydride onto polyethylene: Effect of polyethylene microstructure,” Journal of applied polymer science, vol. 79, no. 1, pp. 96–107, 2001. 129, 135

[17] M. Guzmán and E. A. Murillo, “Funcionalización de Polietileno de Baja Densidad con Anhídrido Maleico en Estado Fundido),” Polímeros, vol. 24, pp.96–107, 2014. [Online]. Available: http://dx.doi./10.4322/polimeros.2014.034 129, 135, 137, 140

[18] C. Jiang, S. Filippi, and P. Magagnini, “Reactive compatibilizer precursors for LDPE/PA6 blends. II: maleic anhydride grafted polyethylenes),”Polímeros, vol. 44, pp. 2411–2422, 2003. [Online]. Available:http://dx.doi.10.1016/S0032-3861(03)00133-2 130

[19] J. Deng, W. Yang, and B. Ranby, “Melt-photografting polymerization of maleic anhydride onto LDPE film),” European Polymer Journal, vol. 38, pp. 1449–1455, 2006. [Online]. Available:http://dx.doi.10.1016/S0014-3057(02)00004-6 132, 135

[20] Y. Zhang, J. Chen, and H. Li, “Functionalization of polyolefins with maleic anhydride in melt state through ultrasonic initiation),”Polymer, vol. 47, pp. 4750–4759, 2006. [Online]. Available:http://dx.doi.10.1016/j.polymer.2006.04.040 135

[21] Yordanov and L. Minkova, “Fractionated crystallization of compatibilized LDPE/PA6 blends,” European Polymer Journal, vol. 41, pp. 527–534, 2005.[Online]. Available: http://dx.doi.10.1016/j.eurpolymj.2004.10.034 136

[22] N. Dayma and B. K. Satapathy, “Microstructural correlations tomicromechanical properties of polyamide-6/low density polyethylenegrafted-maleic anhydride/nanoclay ternary nanocomposites,” Materials and Design, vol. 33, pp. 510–522, 2012. [Online].
Available:http://dx.doi.10.1016/j.matdes.2011.04.057 136

[23] E. A. Murillo, P. P. Vallejo, and B. L. López, “Characterization of hydroxylated hyperbranched polyesters of fourth and fifth generation,”e-Polymers, vol. 1, pp. 1347–1358, 2010. [Online]. Available:http://dx.doi.10.1515/epoly.2010.10.1.1347 137

[24] E. Zagar, M. Zigon, and S. Podzimek, “Characterization of commercial aliphatic hyperbranched polyesters,” Polymer, vol. 47, pp. 166–175, 2006.[Online]. Available: http://dx.doi.10.1016/j.polymer.2005.10.142 137

[25] T.Motaung and A. Luyt, “Effect of maleic anhydride grafting and the presence of oxidized wax on the thermal and mechanical behaviour of LDPE/silica nanocomposites,” Materials Science and Engineering A, vol. 527, pp. 761-768, 2010. [Online]. Available:http://dx.doi.10.1515/epoly.2010.10.1.1347 137

[26] M. T. Zaky, “Influence of low-density polyethylene on the thermal characteristics and crystallinity of high melting point macro- and microcrystalline,”waxes Thermochimica Acta, vol. 499, pp. 79–84, 2010. [Online].Available: http://dx.doi.10.1016/j.tca.2009.11.005 138

[27] A. Pedroso and D. Rosa, “Mechanical, thermal and morphological characterization of recycled LDPE/corn starch blends,” Carbohydrate Polymers, vol. 59, pp. 1–9, 2005. [Online]. Available:http://dx.doi.10.1016/j.carbpol.2004.08.018 139

[28] R. Scaffaro, F. P. La Mantia, L. Canfora, G. Polacco, S. Filippi,and P. Magagnini, “Reactive compatibilization of PA6/LDPE blends with an ethylene-acrylic acid copolymer and a low molar mass bisoxazoline,”Polymers, vol. 44, pp. 6951–6957, 2003. [Online]. Available:http://dx.doi.10.1016/j.polymer.2003.06.001140