Degradation of high density polyethylene packaging by accelerated aging in sea water

Elkori, Rabiaa; Lamarti, Amal; Salmi, Houda; Hachim, Abdelilah; Had, Khalid El

doi:10.1002/pen.26373

Cited by 3 publications

References 60 publications

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Evaluation of the impact of natural weathering on the properties of high‐density polyethylene bottles by experimental approach

Elkori,

Lamarti,

El Had

et al. 2024

Polymer Engineering & Sci

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This work presents an in‐depth experimental study aimed at assessing the impact of natural weathering on the behavior of high‐density polyethylene (HDPE) bottles. To this end, several analytical techniques were employed, including Fourier transform infrared spectroscopy (FTIR) to examine molecular changes, scanning electron microscopy (SEM) to study morphology, thermogravimetric analysis (TGA) to assess thermal properties, and tensile and compression tests to evaluate mechanical properties. The results obtained reveal significant changes in HDPE exposed to natural weathering. FTIR analysis enabled us to identify that the HDPE bottles had been subjected to an oxidation process initiated by the absorption of solar radiation during natural weathering treatments, while SEM analysis showed the presence of holes resulting from the detachment of material fragments after exposure, TGA analysis confirms the impact of natural exposure time on the decrease in the average molecular weight and chemical degradation of HDPE macromolecules, through a reduction in the initial degradation temperature and the maximum thermodegradation temperature. However, tensile and compressive tests showed a reduction in the mechanical strength of HDPE after exposure to natural conditions, with notable variations depending on environmental conditions, making the material damaged. These results enabled us to calculate the damage caused by three damage laws. These results offer important insights into the mechanisms of HDPE degradation under the influence of natural climatic factors, paving the way for the development of more resistant and durable packaging materials in the face of variable environmental conditions.Highlights The objective of this study is to analyze and describe the effects of natural weathering on high‐density polyethylene bottles. This involves evaluating the deterioration of physicochemical, mechanical, and morphological properties. Additionally, three damage laws are employed to assess the extent of damage inflicted by this material. Analytical techniques were used, including SEM, FTIR, and TGA, tensile and compressive test.

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Evaluation of the impact of natural weathering on the properties of high‐density polyethylene bottles by experimental approach

Elkori,

Lamarti,

El Had

et al. 2024

Polymer Engineering & Sci

Self Cite

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Investigation of amyl acetate sorption impact on high‐density polyethylene bottle properties

Elkori,

Lamarti,

El Had

et al. 2024

Polymer International

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Thermoplastics based on polyolefins, including polypropylene, high‐density polyethylene and low‐density polyethylene, are extensively utilized across various packaging sectors. The selection of these materials for specific applications is influenced by multiple factors, such as the polymer's absorption characteristics and the impact on its mechanical properties when in contact with the packaged product. This study presents an experimental methodology designed to simulate the effects of absorption on the macroscopic and microscopic properties of high‐density polyethylene bottles in contact with amyl acetate. Macroscopic degradation was evaluated by modeling mechanical damage using unified theory and the energy method. Analytical techniques such as gravimetric analysis, scanning electron microscopy and Fourier transform infrared spectrometry were employed. The findings of this research provide valuable insights for suppliers and industries to experimentally determine the usability and safety intervals of plastic packaging through comprehensive macroscopic and microscopic analyses within relatively short timescales. © 2024 Society of Chemical Industry.

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Template-free method synthesized NaxCa2.38-xAl2Si57.2O118.59 zeolite particles for enhanced stability

Xia,

Ma,

Qin

et al. 2024

Preprint

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Zeolites have been shown to accelerate hemostasis, improve trauma healing, and provide the resulting multifunctional hemostatic materials, due to their distinctive microporous structure and interfacial properties. However, natural zeolites general contain impurities and it is difficult to produce hemostatic powder of appropriate size using direct crushing methods. Herein, we develop a template free one-step hydrothermal process to synthesized NaxCa2.38−xAl2Si57.2O118.59 zeolite particles with controllable size. The size of NaxCa2.38−xAl2Si57.2O118.59 zeolite particles can be controlled from 1 to 10 µm. The ordered pores in the synthesized NaxCa2.38−xAl2Si57.2O118.59 zeolites exhibit a typical two-dimensional hexagonal structure. The synthesized zeolites exhibit excellent stability in both natural environments and serum. The Na2.38Al2Si57.2O118.59 zeolite particles maintain high stability of morphology and structure after water flow treatment. Those stability results ensure the preservation and use possibility of zeolite hemostatic powder in special environments, such as battlefield, underwater, and extreme weather.

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Degradation of high density polyethylene packaging by accelerated aging in sea water

Cited by 3 publications

References 60 publications

Evaluation of the impact of natural weathering on the properties of high‐density polyethylene bottles by experimental approach

Evaluation of the impact of natural weathering on the properties of high‐density polyethylene bottles by experimental approach

Investigation of amyl acetate sorption impact on high‐density polyethylene bottle properties

Template-free method synthesized NaxCa2.38-xAl2Si57.2O118.59 zeolite particles for enhanced stability

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