We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Insight into the physical and chemical attributes of polypropylene microplastics
Summary
Researchers characterized the physical and chemical properties of polypropylene microplastics using electron microscopy and infrared spectroscopy. They found that the particles had irregular shapes with rough, cracked surfaces and sizes ranging from 14 to 96 micrometers, with spectral signatures confirming degradation. The study also identified that a 5% concentration of sodium lauryl sulfate provided optimal dispersion of these microplastics, addressing stability issues for laboratory research.
Microplastics (MPs) are increasingly recognised for their significant impact on the environment and human health. Understanding MPs is crucial to grasp their widespread presence in various environmental areas. The unique properties of MPs, such as their small size, durability, and potential to adsorb and transport environmental pollutants, underscore the necessity of studying their characteristics. This study aims to investigate the physical and chemical characteristics of polypropylene microplastics (PPMPs) and address the dispersion stability issues associated with them. The PPMPs were characterised using scanning electron microscopy (SEM), revealing a surface structure marked by cracks, fractures, and a rough texture. The PPMPs were observed as irregularly shaped, white particles. Their size distribution spans from 14 to 96 µm, with a mean size of 50.00 µm. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of polypropylene functional groups, specifically identifying characteristic peaks at 2952-2846 cm-1 and 1456 -1376 cm-1, indicating C-H stretching and bending vibrations, respectively, with additional peaks suggesting degradation. The effect of different concentrations of sodium lauryl sulfate (SLS) on PPMPs dispersion indicated that 5% SLS led to superior dispersion of PPMPs, thereby addressing the stability issue. These findings provide comprehensive insights into the physical and chemical attributes of PPMPs and their dispersion stability, offering a foundation for informed environmental assessments and the development of effective mitigation strategies.
Sign in to start a discussion.
More Papers Like This
Identification and morphological characterization of different types of plastic microparticles
Researchers used multiple complementary techniques to identify and characterize the morphology and polymer composition of different types of plastic microparticles. They compared methods including optical microscopy, scanning electron microscopy, and spectroscopic analysis to evaluate their reliability. The study provides practical guidance for standardizing microplastic identification protocols, which is important for producing comparable results across different research laboratories.
The effect of weathering environments on microplastic chemical identification with Raman and IR spectroscopy: Part I. polyethylene and polypropylene
Researchers compared Raman and IR spectroscopy for identifying weathered polyethylene and polypropylene microplastics, finding that weathering significantly alters surface chemistry and that Raman spectroscopy is more robust for identifying heavily weathered samples than IR spectroscopy.
Degradation of polypropylene : proportion of microplastics formed and assessment of their density.
Researchers quantified the proportion of microplastics generated during UV-driven degradation of polypropylene and assessed changes in chemical composition caused by photooxidation. The study found that UV exposure progressively fragments polypropylene and alters its surface chemistry, affecting subsequent environmental behavior and toxicity.
Microplastic fouling: A gap in knowledge and a research imperative to improve their study by infrared characterization spectroscopy
Researchers analysed 4,042 infrared spectra of polystyrene, polyethylene, and polypropylene microplastics collected from the Mediterranean Sea using principal component analysis, identifying that spectral variability in weathered marine microplastics is primarily driven by three processes: chemical ageing, organic fouling, and inorganic fouling.
Optimization of methylene blue dye degradation using heterogeneous Fenton-like reaction with Fe3O4 nanoparticles/PVDF macrospheres: A response surface methodology approach
Researchers characterized polypropylene microplastics using SEM and FTIR analysis, finding irregular shapes with cracks and a size distribution of 14-96 micrometers, and tested sodium lauryl sulfate at 5% concentration as an effective dispersant for improving stability in suspension. The study provides foundational insights into polypropylene microplastic physical and chemical properties relevant to toxicological testing and environmental fate studies.