Abstract
A simultaneously increase in stiffness and toughness is needed for improving polypropylene (PP) competitiveness in automotive industry. The aim of this paper is to investigate the effects of styrene-(ethylene-co-butylene)-styrene triblock copolymer (SEBS) on mechanical and thermal properties of PP, in the presence and the absence of nanoclay. The amount of SEBS in PP was ranged to obtain the matrix with the most favorable stiffness–toughness balance. For this purpose, SEBS domain size and distribution in PP/SEBS blends was determined by means of atomic force microscopy and correlated with mechanical properties. The influence of SEBS on the crystalline structure of PP in PP/organoclay nanocomposites was investigated by X-ray diffraction and differential scanning calorimetry, a synergistic effect of SEBS and nanoclay being pointed out. Moreover large improvement in the impact strength (almost 22 times) was obtained in the case of SEBS-containing nanocomposite in comparison with the composite without SEBS.
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References
- 1.
Li C, Deng H, Wang K, Zhang Q, Chen F, Fu Q (2011) Strengthening and toughening of thermoplastic polyolefin elastomer using polypropylene-grafted multiwalled carbon nanotubes. J Appl Polym Sci 121:2104–2112
- 2.
Hong CH, Lee YB, Bae JW, Jho JY, Nam BU, Hwang TW (2005) Preparation and mechanical properties of polypropylene/clay nanocomposites for automotive parts application. J Appl Polym Sci 98:427–433
- 3.
Jahani Y (2011) Comparison of the effect of mica and talc and chemical coupling on the rheology, morphology, and mechanical properties of polypropylene composites. Polym Adv Technol 22:942–950
- 4.
Liao CZ, Tjong SC (2011) Effects of carbon nanofibers on the fracture, mechanical, and thermal properties of PP/SEBS–g–MA blends. Polym Eng Sci 51:948–958
- 5.
Kobayashi Y, Otsuki Y, Kanai T (2010) Viscoelastic flow analysis of surface morphology on injection-molded polypropylene. Polym Eng Sci 50:2182–2189
- 6.
Tortorella N, Beatty CL (2008) Morphology and mechanical properties of impact modified polypropylene blends. Polym Eng Sci 48:2098–2110
- 7.
Bagheri H, Jahani Y, Haghighi MN, Hakim S, Fan ZQ (2011) Dynamic shear rheological behavior of PP/EPR in-reactor alloys synthesized by multi-stage sequential polymerization process. J Appl Polym Sci 120:3635–3641
- 8.
Matsuda Y, Hara M (2005) Effect of the volume fraction of dispersed phase on toughness of injection molded polypropylene blended with SEBS, SEPS, and SEP. Polym Eng Sci 45:1630–1638
- 9.
Ohlsson B, Hassander H, Tornell B (1996) Blends and thermoplastic interpenetrating polymer networks of polypropylene and polystyrene-block-poly(ethylene-stat-butylene)-block-polystyrene triblock copolymer 1. Morphology and structure-related properties. Polym Eng Sci 36:501–510
- 10.
Matsuda Y, Hara M (2006) Effect of the compatibility on toughness of injection-molded polypropylene blended with EPR and SEBS. Polym Eng Sci 46:29–38
- 11.
Ohlsson B, Tornell B (1998) Blends and interpenetrating polymer networks of polypropylene and polystyrene-block-poly(ethylene-stat-butylene)-block-polystyrene 2. Melt flow and injection molding properties. Polym Eng Sci 38:108–118
- 12.
Jain AK, Nagpal AK, Singhal R, Gupta NK (2000) Effect of dynamic crosslinking on impact strength and other mechanical properties of polypropylene/ethylene-propylene-diene rubber blends. J Appl Polym Sci 78:2089–2103
- 13.
Ha CS, Ray Chowdhury S, Kim GH, Kim I (2007) Polypropylene/ethylene–propylene–diene terpolymer blends. In: Nwabunma D, Kyu T (eds) Polyolefin blends. Wiley, New York, pp 411–440
- 14.
Razavi-Nouri M, Naderi G, Parvin A, Ghoreishy MHR (2011) Thermal properties and morphology of isotactic polypropylene/acrylonitrile–butadiene rubber blends in the presence and absence of a nanoclay. J Appl Polym Sci 121:1365–1371
- 15.
Liang JZ, Li RKY (2000) Rubber toughening in polypropylene: a review. J Appl Polym Sci 77:409–417
- 16.
Stricker F, Thomann Y, Mulhaupt R (1998) Influence of rubber particle size on mechanical properties of polypropylene–SEBS blends. J Appl Polym Sci 68:1891–1901
- 17.
Bassani A, Pessan LA, Hage E (2001) Toughening of polypropylene with styrene/ethylene-butylene/styrene tri-block copolymer: effects of mixing condition and elastomer content. J Appl Polym Sci 82:2185–2193
- 18.
Bassani A, Pessan LA (2002) Toughening of polypropylene with styrene/ethylene-butylene/styrene tri-block copolymer: effects of reactive and nonreactive compatibilization. J Appl Polym Sci 86:3466–3479
- 19.
Mae H, Omiya M, Kishimoto K (2008) Tensile behavior of polypropylene blended with bimodal distribution of styrene-ethylene-butadiene-styrene particle size. J Appl Polym Sci 107:3520–3528
- 20.
Mae H, Omiya M, Kishimoto K (2008) Material ductility and toughening mechanism of polypropylene blended with bimodal distributed particle size of styrene–ethylene–butadiene–styrene triblock copolymer at high strain rate. J Appl Polym Sci 110:3941–3953
- 21.
Kucera J, Nezbedova E (2007) Poly(propylene) with micro-fillers—the way of enhancement of toughness. Polym Adv Technol 18:112–116
- 22.
Karian HG (2003) Handbook of polypropylene and polypropylene composites, revised and expanded. CRC Press, Boca Raton
- 23.
Viksne A, Berzina R, Andersone I, Belkova L (2010) Study of plastic compounds containing polypropylene and wood derived fillers from waste of different origin. J Appl Polym Sci 117:368–377
- 24.
Mnif N, Massardier V, Kallel T, Elleuch B (2009) Study of the modification of the properties of (PP/EPR) blends with a view to preserving natural resources when elaborating new formulation and recycling polymers. Polym Compos 30:805–811
- 25.
Eroglu M (2007) Effect of talc and heat treatment on the properties of polypropylene/EVA composite. Intern J Sci Techn 2:63–73
- 26.
Pascual J, Fages E, Fenollar O, Garcıa D, Balart R (2009) Influence of the compatibilizer/nanoclay ratio on final properties of polypropylene matrix modified with montmorillonite-based organoclay. Polym Bull 62:367–380
- 27.
Fu SY, Feng XQ, Lauke B, Mai YW (2008) Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate–polymer composites. Compos Part B 39:933–961
- 28.
Garces JM, Moll DJ, Bicerano J, Fibiger R, McLeod DG (2000) Polymeric nanocomposites for automotive applications. Adv Mater 12:1835–1839
- 29.
Jipa S, Zaharescu T, Supaphol P (2010) Thermal stability of isotactic polypropylene modified with calcium carbonate nanoparticles. Polym Bull 64:783–790
- 30.
Wang ZM, Nakajima H, Manias E, Chung TC (2003) Exfoliated PP/clay nanocomposites using ammonium-terminated PP as the organic modification for montmorillonite. Macromolecules 36:8919–8922
- 31.
Okamoto M, Nam PH, Maiti P, Kotaka T, Hasegawa N, Usuki A (2001) A house of cards structure in polypropylene/clay nanocomposites under elongational flow. Nano Lett 1:295–298
- 32.
Palza H, Vergara R, Yazdani-Pedram M, Quijada R (2009) Polypropylene/clay nanocomposites: effect of different clays and compatibilizers on their morphology. J Appl Polym Sci 112:1278–1286
- 33.
Tjong SC, Bao SP, Liang GD (2005) Polypropylene/montmorillonite nanocomposites toughened with SEBS–g–MA: structure–property relationship. J Polym Sci, Part B 43:3112–3126
- 34.
Su FH, Huang HX (2009) Mechanical and rheological properties of PP/SEBS/OMMT ternary composites. J Appl Polym Sci 112:3016–3023
- 35.
Panaitescu DM, Donescu D, Bercu C, Vuluga DM, Iorga MD, Ghiurea M (2007) Polymer composites with cellulose microfibrils. Polym Eng Sci 47:1128–1234
- 36.
Ahmad Z, Kumar KD, Saroop M, Preschilla N, Biswas A, Bellare JR, Bhowmick AK (2010) Highly transparent thermoplastic elastomer from isotactic polypropylene and styrene/ethylene-butylene/styrene triblock copolymer: structure–property correlations. Polym Eng Sci 50:331–341
- 37.
Ohlsson B, Tornell B (1996) Melt miscibility in blends of polypropylene, polystyrene-block-poly(ethylene-stat-butylene)-block-polystyrene and processing oil from melting point depression. Polym Eng Sci 36:1547–1556
- 38.
Ferrer GG, Sanchez MS, Sanchez EV, Colomer FR, Ribelles JG (2000) Blends of styrene–butadiene–styrene triblock copolymer and isotactic polypropylene: morphology and thermomechanical properties. Polym Intern 49:853–859
- 39.
Tarapow JA, Bernal CR, Alvarez VA (2009) Mechanical properties of polypropylene/clay nanocomposites: effect of clay content, polymer/clay compatibility, and processing conditions. J Appl Polym Sci 111:768–778
Acknowledgments
This study was supported by the 7th framework program of the European Union (Project NANOTOUGH FP7-NMP-2007-LARGE).
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Vuluga, Z., Panaitescu, D.M., Radovici, C. et al. Effect of SEBS on morphology, thermal, and mechanical properties of PP/organoclay nanocomposites. Polym. Bull. 69, 1073–1091 (2012). https://doi.org/10.1007/s00289-012-0780-4
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Keywords
- PP nanocomposites
- Mechanical properties
- Stiffness–toughness balance
- AFM