We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Study of the Effect of Accelerated Aging by Sea Water on the Mechanical and Chemical Properties of High Density Polyethylene Bottles
AI summary Read the abstract
Researchers subjected high-density polyethylene bottle samples to accelerated seawater aging at two temperatures, finding that immersion caused a loss of ductility and a transition from ductile to brittle failure behavior, with FTIR analysis confirming increasing crystallinity and SEM revealing progressive surface degradation over the aging period.
Abstract The increase of plastic waste in the marine environment has several ecological, human and marine biota problems. In this paper, an accelerated artificial ageing study in seawater was performed, after immersion of samples extracted from high density polyethylene bottles for several ageing times and under two different temperatures. The degradation of the mechanical properties of HDPE at different ageing conditions was studied using static tensile and compression tests. The absorption of seawater by the samples is analyzed by a gravimetric procedure, and Fourier transform infrared spectrometry (FTIR). A further surface analysis of the samples during accelerated ageing was shown by scanning electron microscope SEM. The results obtained show that the high density polyethylene loses its ductility and changes from ductile to brittle failure. Fourier Transform Infrared Spectrometry (FTIR) analysis shows an increase in crystallinity over the ageing period.
More Papers Like This
Change of some characteristics of HDPE pipes tested in Nghe An province seawater
AI summary Read the abstract
This Vietnamese study characterized changes in the structure, morphology, crystallinity, thermal properties, and stability of high-density polyethylene pipes after extended exposure to natural seawater. The results reveal how marine immersion gradually degrades HDPE pipe material properties.
Accelerated degradation of low-density polyethylene in air and in sea water
AI summary Read the abstract
UV-accelerated weathering of low-density polyethylene in air and floating in seawater was compared using FTIR depth profiling, finding that oxidation was diffusion-controlled in both media and localized to a thin surface layer, but that seawater slowed the overall degradation rate.
Investigating the Physicochemical Property Changes of Plastic Packaging Exposed to UV Irradiation and Different Aqueous Environments
AI summary Read the abstract
Researchers investigated UV-driven degradation of polypropylene and PET packaging materials under different aqueous conditions, finding that UV exposure caused significant physicochemical changes including increased crystallinity and surface cracking that contribute to microplastic formation.
Accelerated Hydrothermal Aging and Degradation Mechanism of PE100 Butt-Fusion Welded Joint
AI summary Read the abstract
Researchers simulated the long-term aging of high-density polyethylene pipeline welded joints in water at various temperatures and found that higher temperatures caused more significant degradation of mechanical properties. The study used multiple characterization techniques to reveal changes in the molecular structure of the joints during hydrothermal aging. These findings help predict the service life of HDPE pipelines used in ocean energy transportation and inform strategies to mitigate aging-related failures.
Evaluation of the impact of natural weathering on the properties of high‐density polyethylene bottles by experimental approach
AI summary Read the abstract
Researchers studied natural weathering effects on high-density polyethylene (HDPE) bottles using FTIR, SEM, TGA, and mechanical testing, finding that outdoor exposure causes surface oxidation, material fragmentation, decreased molecular weight, and reduced tensile and compressive strength—providing quantitative damage data relevant to understanding microplastic generation from plastic packaging.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.