The properties of these polymers, as in the case of any materials, depending on the molecular weight of the polymer and the structure of the polymer chains. The main objective of this work is to study the mechanical and physical properties of pure PP and HDPE. To obtain a full characterization of pure polymer, samples were produced using a compression molding technique. Polymeric samples successfully filled the cavity of the die. The mechanical properties of PP and HDPE were determined using three-point bending, compression, hardness and impact test. While the physical properties were studied through density and water absorption. Also, the thermal analysis behavior was determined by thermogravimetric analysis, differential scanning calorimetry and thermomechnical analysis. Results showed the structure affects the properties. The PP showed better elastic modulus and strength due to the methyl attached to the carbon that prevents the chain rotation and hence makes the material stronger but inflexible. On the other hand, the absorbed energy of PP is less than that of HDPE. The thermogravimetric analysis results show a single weight-loss event with a degradation temperature of 310°C for HDPE and 255°C for PP. The differential scanning calorimetry shows that the crystallinity of PP (≅51) is less than that for HDPE (≅68) due to the difference in the specific heat. The coefficient of thermal expansion of HDPE is higher than that of PP due to the stronger interatomic forces.
| Published in | Engineering Science (Volume 4, Issue 2) |
| DOI | 10.11648/j.es.20190402.12 |
| Page(s) | 34-42 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
PP, HDPE, Mechanical Properties, Physical Properties, Thermal Properties
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APA Style
Ahmed Hassan Awad, Ramadan El Gamasy, Ayman Abd El Wahab, Mohamed Hazem Abdellatif. (2019). Mechanical and Physical Properties of PP and HDPE. Engineering Science, 4(2), 34-42. https://doi.org/10.11648/j.es.20190402.12
ACS Style
Ahmed Hassan Awad; Ramadan El Gamasy; Ayman Abd El Wahab; Mohamed Hazem Abdellatif. Mechanical and Physical Properties of PP and HDPE. Eng. Sci. 2019, 4(2), 34-42. doi: 10.11648/j.es.20190402.12
AMA Style
Ahmed Hassan Awad, Ramadan El Gamasy, Ayman Abd El Wahab, Mohamed Hazem Abdellatif. Mechanical and Physical Properties of PP and HDPE. Eng Sci. 2019;4(2):34-42. doi: 10.11648/j.es.20190402.12
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Download@article{10.11648/j.es.20190402.12,
author = {Ahmed Hassan Awad and Ramadan El Gamasy and Ayman Abd El Wahab and Mohamed Hazem Abdellatif},
title = {Mechanical and Physical Properties of PP and HDPE},
journal = {Engineering Science},
volume = {4},
number = {2},
pages = {34-42},
doi = {10.11648/j.es.20190402.12},
url = {https://doi.org/10.11648/j.es.20190402.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.es.20190402.12},
abstract = {The properties of these polymers, as in the case of any materials, depending on the molecular weight of the polymer and the structure of the polymer chains. The main objective of this work is to study the mechanical and physical properties of pure PP and HDPE. To obtain a full characterization of pure polymer, samples were produced using a compression molding technique. Polymeric samples successfully filled the cavity of the die. The mechanical properties of PP and HDPE were determined using three-point bending, compression, hardness and impact test. While the physical properties were studied through density and water absorption. Also, the thermal analysis behavior was determined by thermogravimetric analysis, differential scanning calorimetry and thermomechnical analysis. Results showed the structure affects the properties. The PP showed better elastic modulus and strength due to the methyl attached to the carbon that prevents the chain rotation and hence makes the material stronger but inflexible. On the other hand, the absorbed energy of PP is less than that of HDPE. The thermogravimetric analysis results show a single weight-loss event with a degradation temperature of 310°C for HDPE and 255°C for PP. The differential scanning calorimetry shows that the crystallinity of PP (≅51) is less than that for HDPE (≅68) due to the difference in the specific heat. The coefficient of thermal expansion of HDPE is higher than that of PP due to the stronger interatomic forces.},
year = {2019}
}
TY - JOUR T1 - Mechanical and Physical Properties of PP and HDPE AU - Ahmed Hassan Awad AU - Ramadan El Gamasy AU - Ayman Abd El Wahab AU - Mohamed Hazem Abdellatif Y1 - 2019/10/25 PY - 2019 N1 - https://doi.org/10.11648/j.es.20190402.12 DO - 10.11648/j.es.20190402.12 T2 - Engineering Science JF - Engineering Science JO - Engineering Science SP - 34 EP - 42 PB - Science Publishing Group SN - 2578-9279 UR - https://doi.org/10.11648/j.es.20190402.12 AB - The properties of these polymers, as in the case of any materials, depending on the molecular weight of the polymer and the structure of the polymer chains. The main objective of this work is to study the mechanical and physical properties of pure PP and HDPE. To obtain a full characterization of pure polymer, samples were produced using a compression molding technique. Polymeric samples successfully filled the cavity of the die. The mechanical properties of PP and HDPE were determined using three-point bending, compression, hardness and impact test. While the physical properties were studied through density and water absorption. Also, the thermal analysis behavior was determined by thermogravimetric analysis, differential scanning calorimetry and thermomechnical analysis. Results showed the structure affects the properties. The PP showed better elastic modulus and strength due to the methyl attached to the carbon that prevents the chain rotation and hence makes the material stronger but inflexible. On the other hand, the absorbed energy of PP is less than that of HDPE. The thermogravimetric analysis results show a single weight-loss event with a degradation temperature of 310°C for HDPE and 255°C for PP. The differential scanning calorimetry shows that the crystallinity of PP (≅51) is less than that for HDPE (≅68) due to the difference in the specific heat. The coefficient of thermal expansion of HDPE is higher than that of PP due to the stronger interatomic forces. VL - 4 IS - 2 ER -
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