Assessment of mathematical expressions for morphological parameters of solid particles based on common geometric shapes

Reis, Emerson dos; Canales, Bruno Godoy; Andrade, Matheus Ferreira Felix de

doi:10.1016/j.powtec.2020.05.001

Cited by 6 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MPs can be retained in the gastrointestinal system after entering the human body [ 44 ]. The diameters and morphological properties allow it to be more or less aerodynamic and determine the depth that the MP remains lodged in the organs, allowing the speed and ease of an MP particle that is kept in any organ to be calculated [ 2 , 45 ]. Smaller particles of MP are more likely to enter the respiratory tract.…”

Section: Resultsmentioning

confidence: 99%

Characterization of the Morphological and Chemical Profile of Different Families of Microplastics in Samples of Breathable Air

2023

View full text Add to dashboard Cite

Microplastic (MP) contamination has become a problem of great interest to the community at large. The detection of these particles in different ecosystems and foods has been the subject of study. However, the focus of these investigations has been on the identification and quantification of PM by DSC and Pyr-GC/MS and not on how they are transported to reach the air we breathe. In this study, the values of morphological parameters for plastic particles in a range between 1 and 2000 µm, present in the breathable air of 20 neighborhoods in the city of Cartagena, Colombia, were obtained to determine the characteristics that make these particles airborne. The values of parameters were obtained, such as roundness, sphericity, curvature, and the convexity of the particle, as well as its compactness and size, which influence its transport through the air and its ability to be ingested and inhaled. The data obtained in this study allows for simulations and the analysis of the behavior of microplastics once in the environment to predict future settlements. The DSC showed us the melting temperatures of PP, PE, PET, and PS, the Pyr-GC/MS showed the fragmentation patterns, and the presence of these MPs in the samples was confirmed.

show abstract

Section: Resultsmentioning

confidence: 99%

Characterization of the Morphological and Chemical Profile of Different Families of Microplastics in Samples of Breathable Air

2023

View full text Add to dashboard Cite

show abstract

An experimental and numerical study of the influence of the additive manufacturing process in packing properties of particles: the printed shape matters

Friedrich,

Tan,

Briesen

et al. 2024

Granular Matter

View full text Add to dashboard Cite

Investigations into the various properties of granular matter composed of particles with defined shapes have gained increasing attention. Additive manufacturing, with its freedom of shape and rapid prototyping capabilities, has significantly contributed to these studies. However, this technique may introduce defects in the manufactured particles, which can significantly affect the properties of granular materials. The extent of these defects on particles of different shapes is investigated here. Particles of various shapes (cube, octahedron, quatropod, stellated octahedron, tetrahedron, and tetrapod) were manufactured and subsequently imaged using micro-Computed Tomography. The surface roughness, solidity, and convexity of the particles were quantified. Discrete element simulations of granular bed porosity, utilizing both idealized and real particle shapes, were conducted with different surface mesh resolutions and frictional parameters. A clear influence of the manufacturing process on the packing properties of 3D printed particles was identified. This influence is not uniform across all shapes and is directly correlated with the particle convexity. For numerical simulations, a shape-dependent correction of particle density and surface characteristics are imperative for each shape under consideration, despite the fact that the particles were manufactured using the same technique and material. Graphic abstract

show abstract

Characterization of deteriorated railway ballast morphological changes using 3D scanning and supervised machine learning data analytics

Kwunjai,

Somsri,

Jitsangiam

et al. 2023

Construction and Building Materials

View full text Add to dashboard Cite

Assessment of mathematical expressions for morphological parameters of solid particles based on common geometric shapes

Cited by 6 publications

References 18 publications

Characterization of the Morphological and Chemical Profile of Different Families of Microplastics in Samples of Breathable Air

Characterization of the Morphological and Chemical Profile of Different Families of Microplastics in Samples of Breathable Air

An experimental and numerical study of the influence of the additive manufacturing process in packing properties of particles: the printed shape matters

Characterization of deteriorated railway ballast morphological changes using 3D scanning and supervised machine learning data analytics

Contact Info

Product

Resources

About