Abstract
The effect of the maleic anhydride grafted styrene-ethylene/butylene-styrene (SEBS-g-MA) block copolymer on the properties of thermoplastic polyurethane (TPU) and polypropylene (PP) blends were studied. TPU/PP and TPU/PP/SEBS-g-MA blends with different weight ratios were prepared in a twin-screw extruder. The thermal properties of the blends were investigated via differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The morphological structure of the blends as well as the effect of SEBS-g-MA block copolymer on the reduction of domain size and particle dispersion were investigated via scanning electron microscopy (SEM). The results from the uncompatibilized blends clearly indicated immiscibility of TPU and PP resulting in undesirable properties. The thermal properties of TPU/PP blends were improved by compatibilization with SEBS-g-MA. Addition of the SEBS-g-MA block copolymer resulted in a finer dispersion of the minor phase and clearly improved interfacial adhesion.
References
Allen, N. S., Edge, M.: Fundamentals of Polymer Degradation and Stabilization, 2nd Edition, Elsevier Applied Science, London (1992)Search in Google Scholar
Bajsić, G. E., Šmit, I. and Leskovac, M., “Blends of Thermoplastic Polyurethane and Polypropylene. I. Mechanical and Phase Behavior”, J. Appl. Polym. Sci., 104, 3980–3985 (2007) 10.1002/app.26222Search in Google Scholar
Bajsić, G. E., Pustak, A., Šmit, I. and Leskovac, M., “Blends of Thermoplastic Polyurethane and Polypropylene. II. Thermal and Morphological Behavior”, J. Appl. Polym. Sci., 117, 1378–1384 (2010)Search in Google Scholar
Bajsić, G. E., Rek, V. and Ormuž, P. B., “The Influence of Talc Content on the Thermal and Mechanical Properties of Polyurethane/Polypropylene Blends”, J. Elast. Plast., 45, 501–522 (2013) 10.1177/0095244312458602Search in Google Scholar
Bartzack, Z., Galeski, A. and Krasnikova, N. P., “Primary Nucleation and Spherulite Growth Rate in Isotactic Polypropylene-Polystyrene Blends”, Polymer, 28, 1627–1634 (1987) 10.1016/0032-3861(87)90002-4Search in Google Scholar
Becker, D., Roeder, J., Oliveira, R. V. B., Soldi, V. and Pires, A. T. N., “Blend of Thermosetting Polyurethane Waste with Polypropylene: Influence of Compatibilizing Agent on Interface Domains and Mechanical Properties”, Polym. Test., 22, 225–230 (2003) 10.1016/S0142-9418(02)00086-7Search in Google Scholar
Chuayjuljit, S., Ketthongmongkol, S., “Properties and Morphology of Injection- and Compression-Molded Thermoplastic Polyurethane/Polypropylene-Graft-Maleic Anhydride/Wollastonite Composites“, J. Thermoplast. Compos., 26, 923–935 (2013) 10.1177/0892705711431104Search in Google Scholar
Datta, S., Lohse, D. J., “Graft Copolymer Compatibilizers for Blends of Isotactic Polypropylene and Ethene-Propene Copolymers. 2. Functional Polymers Approach”, Macromolecules, 26, 2064–2076 (1993) 10.1021/ma00060a040Search in Google Scholar
Fujiyama, M., Wakino, T., “Crystal Orientation in Injection Molding of Talc-Filled Polypropylene”, J. Appl. Polym. Sci., 42, 9–20 (1992) 10.1002/app.1991.070420103Search in Google Scholar
Grgurić, H. T., Rek, V. and Brnardić, I., “The Effect of SEBS Block Copolymer on Mechanical and Tribiological Properties of Polypropylene”, MATRIB 2011, International Conference on Materials, Tribology, Recycling, Vela Luka, Croatia (2011)Search in Google Scholar
Ha, C.-S., Park, H.-D. and Cho, W.-J., “Compatibilizers for Recycling of the Plastic Mixture Wastes. II. The Effect of a Compatibilizer for Binary Blends on the Properties of Ternary Blends”, J. Appl. Polym. Sci., 76, 1048–1053 (2000) 10.1002/(SICI)1097-4628(20000516)76:7<1048::AID-APP8>3.0.CO;2-RSearch in Google Scholar
Jaruttrakool, R., Tanpichai, S., Pentrakoon, D. and Potiyaraj, P., “Reactive Blending of Thermoplastic Polyurethane and Polypropylene”, Int. Polym. Proc., 25, 327–333 (2010) 10.3139/217.2299Search in Google Scholar
Jia, S., Zhu, Y., Wang, Z. W., Cheu, L. and Fu, L., “Influence of PP-g-MA on the Surface Free Energy, Morphologies and Mechanical Properties of the Thermoplastic Polyurethane/Polypropylene Blends”, J. Polym. Res., 22, 159 (2015) 10.1007/s10965-015-0800-9Search in Google Scholar
Kannan, M., Bhagawan, S. S., “Mechanical Properties and Morphology of Nanoclay-Filled Different TPU/PP Blends”, Polym. Plast. Technol., 48, 871–876 (2009) 10.1080/03602550902994946Search in Google Scholar
Kannan, M., Bhagawan, S. S., Thomas, S. and Joseph, K., “Nanoclay Effect on Transport Properties of Thermoplastic Polyurethane/Polypropylene (TPU/PP) Blends”, J. Polym. Res., 20, 1–15 (2013) 10.1007/s10965-013-0201-xSearch in Google Scholar
Lattimer, R. P., Polce, M. J. and Wesdemiotis, C., “MALDI-MS Analysis of Pyrolysis Products from a Segmented Polyurethane”, Anal. Appl. Pyrolysis, 48, 1–15 (1998) 10.1016/S0165-2370(98)00092-8Search in Google Scholar
Lee, H. K., Ko, S. W., “Structure and Thermal Properties of Polyether Polyurethaneurea Elastomers”, J. Appl. Polym. Sci., 50, 1269–1280 (1993) 10.1002/app.1993.070500718Search in Google Scholar
Legge, N. R., Holden, G. and Schroeder, H. F.: Thermoplastic Elastomers: A Comprehensive Review, Carl Hanser Publisher, Munich (1987)Search in Google Scholar
Liu, S.-P., Ying, J.-R., Zhou, X.-P., Xie, X.-L. and Mai, Y.-W., “Dispersion, Thermal and Mechanical Properties of Polypropylene/Magnesium Hydroxide Nanocomposites Compatibilized by SEBS-g-MA”, Compos. Sci. Technol., 69, 1873–1879 (2009) 10.1016/j.compscitech.2009.04.004Search in Google Scholar
Lu, Q. W., Macosko, C. W., “Comparing the Compatibility of Various Functionalized Polypropylene with Thermoplastic Polyurethane (TPU)”, Polymer, 45, 1981–1991 (2004) 10.1016/j.polymer.2003.12.077Search in Google Scholar
Paglicawan, M. A., Balasubramanian, M., Zhang, Z.-X. and Kim, J. K., “Waste PU/PP Blends with Improved Technological Properties”, Polym.-Plast. Technol. Eng., 47, 47–52 (2008) 10.1080/03602550701580896Search in Google Scholar
Panaitescu, D. M., Vuluga, Z., Radovici, C. and Nicolae, C., “Morphological Investigation of PP/Nanosilica Composites Containing SEBS”, Polym. Test., 31, 355–365 (2012) 10.1016/j.polymertesting.2011.12.010Search in Google Scholar
Panaitescu, D. M., Vuluga, Z., Notingher, P. V. and Nicolae, C., “The Effect of Poly[styrene-B-(ethylene-co-butylene)b-styrene] on Dielectric, Thermal, and Morphological Characteristics of Polypropylene/Silica Nanocomposites”, Polym. Eng. Sci., 53, 2081–2092 (2013) 10.1002/pen.23475Search in Google Scholar
Petrović, Z. S., Zavargo, Z., Flyn, J. H. and Macknight, W., “Thermal Degradation of Segmented Polyurethanes”, J. Appl. Polym. Sci., 51, 1087–1095 (1994) 10.1002/app.1994.070510615Search in Google Scholar
Pustak, A., Denac, M., Leskovac, M., Švab, I., Musil, V. and Šmit, I., “Morphology and Mechanical Properties of IPP/Silica Composites Modified with (styrene-b-ethylene-co-butylene-b-styrene) Grafted with Maleic Anhydride”, Polym. Plast. Technol., 54, 647–660 (2015) 10.1080/03602559.2014.979495Search in Google Scholar
Radonjič, G., Musil, V. and Šmit, I., “Compatibilization of Polypropylene/Polystyrene Blends with Poly(styrene-b-butadiene-b-styrene) Block Copolymer”, J. Appl. Polym. Sci., 69, 2625–2639 (1998) 10.1002/(SICI)1097-4628(19980926)69:13<2625::AID-APP13>3.0.CO;2-TSearch in Google Scholar
Stamhuis, J. E., “Mechanical Properties and Morphology of Polypropylene Composites II. Effect of Polar Components in Talc-Filled Polypropylene”, Polym. Compos., 9, 72–77 (1988) 10.1002/pc.750090110Search in Google Scholar
Šmit, I., Radonjič, G., “Effects of SBS on Phase Morphology of IPP/APS Blends”, Polym. Eng. Sci., 40, 2144–2160 (2000) 10.1002/pen.11347Search in Google Scholar
Švab, I., Musil, V., Jurkin, T. and Šmit, I., “Phase Structure and Morphology of Wollastonite-Reinforced Polypropylene Composites Modified with SEBS and SEBS-g-MA Elastomers”, Polym. Eng. Sci., 47, 2145–2154 (2007) 10.1002/pen.20897Search in Google Scholar
Varga, J., “Supermolecular Structure of Isotactic Polypropylene”, J. Mater. Sci., 27, 2557–2579 (1992) 10.1007/BF00540671Search in Google Scholar
Wenig, W., Fiedel, H.-W. and Scholl, A., “Crystallization Kinetics of Isotactic Polypropylene Blended with Atactic Polystyrene”, Colloid Polym. Sci., 268, 528–535 (1990) 10.1007/BF01410294Search in Google Scholar
Wilhelm, H. M., Felisberti, M. I., “Morphology and Mechanical Properties of Polypropylene/Maleated Styrene-Butadiene-Styrene Triblock Copolymer Blends”, J. Appl. Polym. Sci., 86, 359–365 (2002) 10.1002/app.10971Search in Google Scholar
Wunderlich, B.: Macromolecular Physics, Academic Press, New York (1980)Search in Google Scholar
Zhang, C.-L., Feng, L.-F., Hoppe, S. and Hu, G.-H., “Compatibilizer-Tracer: A Powerful Concept for Polymer-Blending Processes”, AIChE J., 58, 1921–1928 (2012) 10.1002/aic.12723Search in Google Scholar
Zhang, X., Wu, H. and Guo, S., “The Molecular Structure of SEBS Grafted with Maleic Anhydride through Ultrasound Initiation”, Chin. J. Polym. Sci., 33, 988–999 (2015) 10.1007/s10118-015-1645-8Search in Google Scholar
© 2017, Carl Hanser Verlag, Munich