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Vol. 36 No. 2 (2024): Vol 36 Issue 2, 2024

Copyright (c) 2024 Surej Rajan C Cheruvathoor

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Mechanical Properties, Morphological Characterization and Melt Dripping Studies of Polypropylene (PP) + High Density Polyethylene (HDPE) + Polystyrene (PS) Ternary Polymer Blends: Non-Isothermal Degradation Kinetics of Compatibilized and Uncompatibilized Blends

https://doi.org/10.14233/ajchem.2024.30711
C. Surej Rajan
Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode-673601, India
https://orcid.org/0000-0003-3650-8570
Lity Alen Varghese
Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode-673601, India
https://orcid.org/0000-0001-9399-2106
Shiny Joseph
Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode-673601, India
Soney C. George
Centre for Nanoscience and Technology, Amal Jyothi College of Engineering, Kanjirapilly-686518, India

Corresponding Author(s) : Lity Alen Varghese

lityalen@nitc.ac.in

Asian Journal of Chemistry, Vol. 36 No. 2 (2024): Vol 36 Issue 2, 2024

Abstract

Polymer composites have been widely used due to its light weight, performance with good mechanical properties, corrosion resistant, solvent resistance and it becomes an important part of the industries. Polypropylene (PP), polystyrene (PS) and high-density  polyethylene (HDPE) are applied to various commercial as well as automobile spare parts. In this study PP, PS and HDPE were melt  mixed together to form a ternary polymer blend and mechanical, morphological, thermogravimetric analysis were conducted to  determine its potential applications. The compatibilization of the blend was achieved by the combination of ethylene-propylenediene- monomer (EPDM) and styrene-ethylene-butylene-styrene (SEBS). Model free methods like Flynn Wall Ozawa (FWO), Kissinger-Akahira- Sunose equation (KAS) and Friedman methods were applied to estimate the activation energy values at different heating rates of 5, 10  and 15 ºC/min. The compatibilized blend of 80PP/5PS/15HDPE with 5% SEBS/EPDM showed better tensile strength compared to  uncompatibilized. Freidman method produced a higher value of average activation energy as 203.4 kJ/mol. The melt dripping  characteristics was also analyzed were the time to ignition and time for first drip was found to be in the range of 6 to 9 s and 14-16 s.  Pure and compatibilized blends showed a very low limiting oxygen index (LOI) values as in the range of 18.7 to 18.9.  Elastomeric/rubber blend compatibilization was achieved and the material can be applied to light weight automobile applications.  From morphological characterization, it was understood that compatibilized blends are more durable and easily transfer the stress  uniformly through the interface. This compatibilized blend can also be used in low temperature regions. 

Keywords

Polyproplylene Polystyrene High density polyethylene Compatibilizer Polymer blends
Rajan, C. S., Varghese, L. A., Joseph, S., & George, S. C. (2024). Mechanical Properties, Morphological Characterization and Melt Dripping Studies of Polypropylene (PP) + High Density Polyethylene (HDPE) + Polystyrene (PS) Ternary Polymer Blends: Non-Isothermal Degradation Kinetics of Compatibilized and Uncompatibilized Blends. Asian Journal of Chemistry, 36(2), 307–316. https://doi.org/10.14233/ajchem.2024.30711
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