Separated and combined use of compatibilizers in the recycling of heterogeneous PET/PO mixtures
Keywords:
Recycling, Compatibilizers, Polyethylene terephthalate, PolyolefinAbstract
The purpose of this work is to promote the recirculation of polyester waste such as polyethylene terephthalate (PET) for packaging in a mixture with polyolefins (POs). It was proposed to study and understand the interaction of the recirculated material with two different compatibilizers, which were used individually and in combination. The compatibilizers consisted mainly of copolymers with epoxy functionality and maleic anhydride. Through differential scanning calorimetry (DSC) and melt flow index (MFI) analysis, the interaction of the coupling agents and the PET / PO recycling material was demonstrated, relating the melting behavior, crystallization and flow ability of the recycled material.
References
[1] Pet Packaging Market Size & Share Analysis – Growth Trends & Forecasts (2023–2028). https://www.mordorintelligence.com/industry-reports/pet-packaging-market
[2] Senado de la República (5 de diciembre de 2019). Acuerdo nacional para la nueva economía del plástico en México. Senado de la República, México.
[3] Celik, Y., Shamsuyeva, M., & Endres, H.J. (2022). Thermal and Mechanical Properties of the Recycled and Virgin PET—Part I. Polymers, 14(7), 1326. https://doi.org/10.3390/polym14071326
[4] Finch, C.A. (1993). Plastics recycling products and processes Edited by R. J. Ehrig Hanser Publishers, Munich, 1992. Polym. Int., 30(3), 426–426. https://doi.org/10.1002/pi.4990300329
[5] Muthuraj, R., Misra, M., & Mohanty, A.K. (2018). Biodegradable compatibilized polymer blends for packaging applications: A literature review. Journal of Applied Polymer Science, 135(24), 45726. https://doi.org/10.1002/app.45726
[6] Liu, B. & Xu, Q. (2013). Effects of Bifunctional Chain Extender on the Crystallinity and Thermal Stability of PET. Journal of Materials Science and Chemical Engineering, 1(6), 9–15. https://doi.org/10.4236/msce.2013.16002
[7] Guerrero, C., Lozano, T., González, V., & Arroyo, E. (2001). Properties and morphology of poly(ethylene terephthalate) and high‐density polyethylene blends. Journal of Applied Polymer Science, 82(6), 1382–1390. https://doi.org/10.1002/app.1975
[8] Taghavi, S.K., Shahrajabian, H., & Hosseini, H.M. (2018). Detailed comparison of compatibilizers MAPE and SEBS-g-MA on the mechanical/thermal properties, and morphology in ternary blend of recycled PET/HDPE/MAPE and recycled PET/HDPE/SEBS-g-MA. Journal of Elastomers & Plastics, 50(1), 13–35. https://doi.org/10.1177/0095244317698738
[9] Runt, J. & Huang, J. (2002). Polymer blends and copolymer. En Cheng, S.Z.D. (Ed.), Handbook of thermal analysis and calorimetry: applications to polymers and plastics (vol. 3, cap. 8, pp. 273–294). Elsevier.
[10] Delgadillo-Velázquez, O., Hatzikiriakos, S.G., & Sentmanat, M. (2008). Thermorheological properties of LLDPE/LDPE blends. Rheologica Acta, 47(1), 19–31. https://doi.org/10.1007/s00397-007-0193-8
[11] Pedroso, A.G. & Rosa, D.S. (2005). Mechanical, thermal and morphological characterization of recycled LDPE/corn starch blends. Carbohydrate Polymers, 59(1), 1–9. https://doi.org/10.1016/j.carbpol.2004.08.018
[12] Dintcheva, N.T., Jilov, N., & La Mantia, F.P. (1997). Recycling of plastics from packaging. Polymer Degradation and Stability, 57(2), 191–203. https://doi.org/10.1016/S0141-3910(96)00232-7
[13] Shanks, R.A. (2020). Concepts and classification of compatibilization processes. En Ajitha, A.R., & Sabu, T. (Eds.), Compatibilization of Polymer Blends (cap. 2, pp. 31–56). Elsevier. https://doi.org/10.1016/B978-0-12-816006-0.00002-5
[14] Celik, Y., Shamsuyeva, M., & Endres, H.J. (2022). Thermal and Mechanical Properties of the Recycled and Virgin PET—Part I. Polymers, 14(7), 1326. https://doi.org/10.3390/polym14071326
[15] Szymczak, P., Dziadowiec, D., Andrzejewski, J., & Szostak, M. (2023). The Efficiency Evaluation of the Reactive Extrusion Process for Polyethylene Terephthalate (PET). Monitoring of the Industrial Foil Manufacturing Process by In-Line Rheological Measurements. Applied Sciences, 13(6), 3434. https://doi.org/10.3390/app13063434
[16] Coba-Daza, S., Lapworth, M., Twite-Kabamba, E., Rojas, S., Shieh, Y.-T., & Carzino, R. (2023). Unlocking Superior Properties in Polypropylene/Polyethylene Terephthalate (Pp/Pet) Blends Using Reactive Compatibilization. SSRN. https://doi.org/10.2139/ssrn.4438498
[17] Bocz, K., Ronkay, F., Decsov, K.E., Molnár, B., & Marosi, G. (2021). Application of low-grade recyclate to enhance reactive toughening of poly(ethylene terephthalate). Polymer Degradation and Stability, 185, 109505. https://doi.org/10.1016/j.polymdegradstab.2021.109505
[18] Kalfoglou, N. (1995). Comparison of compatibilizer effectiveness for PET/HDPE blends. Polymer, 36(23), 4453–4462. https://doi.org/10.1016/0032-3861(95)96853-Z
