Toughness Improvement in Ternary HDPE/PS/PET Polymer Blends with Compatibilizer

  • K. Dobrovszky Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics
  • F. Ronkay Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics
Keywords: ternary blend, compatibilization, toughness, scanning electron microscopy


Preparing polymer blends is an efficient way to develop new raw materials. In the present study, the morphological and mechanical properties were investigated in ternary polymer blend. The three immiscible plastics were polyethylene terephthalate (PET), high density polyethylene (HDPE) and polystyrene (PS), which can be found in post-consumer waste in large quantities. Three different processing methods, internal mixing, extrusion and injection moulding were used during the production. Two different kinds of compatibilizer agents were also added to the blend. The results show that the best mechanical properties can be achieved if the ternary polymer blends are produced by extrusion followed by injection moulding or direct injection moulding was used without any previous homogenization, and styrene/ethylene-butylene/styrene copolymer grafted with maleic anhydride (SEBS-g-MA) was also added to the polymer blend.

Author Biographies

K. Dobrovszky, Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics
Department of Polymer Engineering, PhD student
F. Ronkay, Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics
Department of Polymer Engineering, Associate professor


Al-Salem SM, Lettieri P, Baeyens J: Recycling and recovery routes of plastic solid waste (PSW): A review. Waste Management, Vol. 29, No. 10, pp. 2625-2643, 2009. DOI: 10.1016/j.wasman.2009.06.004

Sperling LH: Introduction to physical polymer science. 4th ed. John Wiley & Sons Inc., Hoboken, 2006.

Manias E, Utracki LA: Chapter 2 - Thermodynamics of polymer blends. in Polymer blends handbook. Eds: Utracki LA, Wilkie CA, Springer, Dordrecht, Vol 1 (2nd ed), 171-289, 2014.

Li Y-Y, Hu S-W, Sheng J: Evolution of phase dimensions and interfacial morphology of polypropylene/polystyrene compatibilized blends during mixing. European Polymer Journal, Vol. 43, No. 2, pp. 561-572, 2007. DOI: 10.1016/j.eurpolymj.2006.10.018

Hargitai H, Ibriksz T, Stifter J, Andersen E: Development of PA6/HDPE nanocomposite blends. Materials Science Forum, Vol. 729, pp. 216-221, 2013. DOI: 10.4028/

Razavi S, Shojaei A, Bagheri R: Binary and ternary blends of high-density polyethylene with poly(ethylene terephthalate) and polystyrene based on recycled materials. Polymers for Advanced Technologies, Vol. 22, No. 5, pp. 690-702, 2011. DOI: 10.1002/pat.1567

Omonov TS, Harrats C, Groeninckx G: Co-continuous and encapsulated three phase morphologies in uncompatibilized and reactively compatibilized polyamide 6/polypropylene/polystyrene ternary blends using two reactive precursors. Polymer, Vol. 46, No. 26, 12322-12336, 2005. DOI: 10.1016/j.polymer.2005.10.022

Yin B, Li L-P, Yan Z, Gong L, Yang M-B, Xie B-H: Largely improved impact toughness of PA6/EPDM-g-MA/HDPE ternary blends: The role of core-shell particles formed in melt processing on preventing micro-crack propagation. Polymer, Vol. 54, No. 7, pp. 1938-1947, 2013. DOI: 10.1016/j.polymer.2013.02.001

Fayt R, Jerome R, Teyssié P: Molecular design of multicomponent polymer systems, 13. Control of the morphology of polyethylene/polystyrene blends by block copolymers. Die Makromolekulare Chemie, Vol. 187, No. 4, pp. 837-852, 1986. DOI: 10.1002/macp.1988.021890726

Imre B, Renner K, Pukánszky B: Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends. eXPRESS Polymer Letters, Vol. 8, No. 1, pp. 2-14, 2014. DOI: 10.3144/expresspolymlett.2014.2

Ravati S, Favis BD: Morphological states for a ternary polymer blend demonstrating complete wetting. Polymer, Vol. 51, No. 20, pp. 4547-4561, 2010. DOI: 10.1016/j.polymer.2010.07.014

Dobrovszky K, Ronkay F: Alternative polymer separation technology by centrifugal force in a melted state. Waste Management, Vol. 34, No. 11, pp. 2104-2112, 2014. DOI: 10.1016/j.wasman.2014.05.006

Pötschke P, Paul DR: Formation of Co-continuous Structures in Melt-Mixed Immiscible Polymer Blends. Journal of Macromolecular Science, Part C: Polymer Reviews, Vol. 43, No. 1, pp. 87-141, 2003. DOI: 10.1081/MC-120018022

Wang D, Li Y, Xie X-M, Guo B-H: Compatibilization and morphology development of immiscible ternary polymer blends. Polymer, Vol. 52, No. 1, pp. 191-200, 2011. DOI: 10.1016/j.polymer.2010.11.019

Pracella M, Rolla L, Chionna D, Galeski A: Compatibilization and properties of poly(ethylene terephthalate)/polyethylene blends based on recycled materials. Macromolecular Chemistry and Physics, Vol. 203, No. 10-11, pp. 1473-1485, 2002. DOI: 10.1002/1521-3935(200207)203:10/11<1473::AID-MACP1473>3.0.CO;2-4

Sahnoune F, Lopez Cuesta JM, Crespy A: Improvement of the mechanical properties of an HDPE/PS blend by compatibilization and incorporation of CaCO3. Polymer Engineering & Science, Vol. 43, No. 3, pp. 647-660, 2003. DOI: 10.1002/pen.10053

Carté TL, Moet A: Morphological origin of super toughness in

poly(ethylene terephthalate)/polyethylene blends. Journal of Applied Polymer Science, Vol. 48, No. 4, pp. 611-624, 1993. DOI: 10.1002/app.1993.070480405

How to Cite
Dobrovszky, K. and Ronkay, F. (2015) “Toughness Improvement in Ternary HDPE/PS/PET Polymer Blends with Compatibilizer”, Acta Technica Jaurinensis, 8(1), pp. pp. 36-46. doi: 10.14513/actatechjaur.v8.n1.359.
Vehicle, Mechanical Engineering and Mechatronics