Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes
Ahmed, M., Elshafie, M., Kandil, U., Taha, M. (2021). Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes. EKB Journal Management System, 64(5), 2517-2523. doi: 10.21608/ejchem.2021.62554.3341
Mona Ahmed; Mohamed Elshafie; Usama Kandil; Mahmoud Reda Taha. "Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes". EKB Journal Management System, 64, 5, 2021, 2517-2523. doi: 10.21608/ejchem.2021.62554.3341
Ahmed, M., Elshafie, M., Kandil, U., Taha, M. (2021). 'Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes', EKB Journal Management System, 64(5), pp. 2517-2523. doi: 10.21608/ejchem.2021.62554.3341
Ahmed, M., Elshafie, M., Kandil, U., Taha, M. Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes. EKB Journal Management System, 2021; 64(5): 2517-2523. doi: 10.21608/ejchem.2021.62554.3341

Improving the Mechanical Properties of Thermoplastic Polyolefins Using Recycled Low-Density Polyethylene and Multi-Walled Carbon Nanotubes

Egyptian Journal of Chemistry
Article 28, Volume 64, Issue 5, May 2021, Page 2517-2523  XML PDF (600.85 K)
Document Type: Review Articles
DOI: 10.21608/ejchem.2021.62554.3341
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Authors
Mona Ahmed1; Mohamed Elshafie2; Usama Kandil email orcid 1; Mahmoud Reda Tahaorcid 3
1Petroleum Applications Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
2Petroleum applications department, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt.
3Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, NM 87131-0001, USA
Abstract
Thermoplastic polyolefin (TPO) has gained considerable attention because of having a combination of rubbery and thermoplastic properties and ease of production. Their excellent weather resistance, low density, and relatively low cost make them attractive materials for the automotive, electrical, footwear industries and membranes for water treatment. Their main shortcomings are poor mechanical properties, especially at low temperatures because of the opposing trends of stiffness and toughness. In this paper, recycled low density polyethylene (RLDPE) was integrated with ethylene-propylene-diene rubber (EPDM) incorporating very low content of carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) to improve the mechanical properties of the produced TPO nanocomposite. TPO has been prepared through the combination of 40, 50, and 60 wt.% RLDPE and 40, 50, and 60 wt.% EBDM. The improved TPO composition was then reinforced with 0.1, 0.3, and 0.5 wt.% MWCNTs-COOH to produce TPO nanocomposites. The compounding of TPO and its nanocomposites was done by melt mixing followed by heat pressing. Mechanical and thermal behaviors of the TPO nanocomposites were investigated. Tensile tests showed that the TOP (60-40) is the best improved concentration; the storage modulus of nanocomposites was enhanced by increasing MWCNTs-COOH concentration. In addition, modulus, stress/strain and toughness of TPO were enhanced by adding 0.5 wt.% MWCNTs-COOH. Thus, MWCNTs-COOH reinforced TPO due to not only its large aspect ratios but also due to its interaction with both the TOP matrix and the combatibilizer. The results of microstructural investigations of the prepared TPO nanocomposite using FTIR and TGA confirmed the interaction between MWCNTs-COOH and TPO matrix
Keywords
Thermoplastic Polyolefin; Dynamic Mechanical Analysis (DMA); Nanocomposites; Carbon Nanotubes
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