The in situ study of fractal microstructure in nanocarbon polymers is an actual task for their application and for the improvement in their functional properties. This article presents a visualization of the bulk structural features of the composites using pulsed acoustic microscopy and synchrotron X-ray microtomography. This article presents details of fractal structure formation using carbon particles of different sizes and shapes-exfoliated graphite, carbon platelets and nanotubes. Individual structural elements of the composite, i.e., conglomerations of the particles in the air capsule as well as their distribution in the composite volume, were observed at the micro- and nanoscale. We have considered the influence of particle architecture on the fractal formation and elastic properties of the composite. Acoustic and X-ray imaging results were compared to validate the carbon agglomeration.
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http://dx.doi.org/10.3390/polym16101354 | DOI Listing |
Sci Rep
November 2024
School of Architectural Engineering, Neijiang Normal University, Neijiang, 641112, China.
The Cretaceous mudstone undergoes significant argillization and disintegration when in contact with water due to its high content of clay minerals, posing a severe challenge to the stability of roadways in coal mines during construction and operation. This research aimed to prepare water-sensitive mudstone-like materials by the method of clay mineral composition similar to that of natural Cretaceous mudstone to reproduce the mechanical and hydraulic properties of natural rocks and meanwhile reveal the deteriorating effect of clay minerals on its microstructure and macroscopic properties. Using binary clay-gypsum mixtures and considering the aggregate-binder ratio, the clay-gypsum ratio, the iron sand content in fine sand, and the powder sand content in aggregate as controlling factors, 16 groups of proportioning schemes were established using the orthogonal test method and a series of physic mechanical experiments were conducted to determine its mechanical and hydraulic properties.
View Article and Find Full Text PDFEco Environ Health
December 2024
Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
Aquifers composed of porous granular media are important to human beings because they are capable of storing a large amount of groundwater. Contaminant migration and remediation in subsurface environments are strongly influenced by three-dimensional (3D) microstructures of porous media. In this study, fractal models are developed to investigate contaminant transport and surfactant-enhanced aquifer remediation (SEAR) for the regular tetrahedron microstructure (RTM) and right square pyramid microstructure (RSPM).
View Article and Find Full Text PDFInt J Nanomedicine
November 2024
Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
Introduction: Biomineralization has been increasingly adopted for the synthesis of advanced materials with superior properties. Hierarchical architecture growth mimicking biomineralization has been studied using various organic molecules to template inorganic materials with controlled morphology. In our previous study, self-assembled Sr/CS/G(SrCO-chitosan-gelatin) aggregates were fabricated using electrophoretic deposition (EPD).
View Article and Find Full Text PDFEnviron Pollut
December 2024
School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
Volatile organic compounds (VOCs) are major chemical pollutants in indoor air. Indoor fabrics, such as curtains, carpets, sofas, and clothes, strongly adsorb VOCs due to their high loading rates and large specific surface areas. The desorption of VOCs from these fabrics can act as a secondary source, worsening indoor air pollution and prolonging its effects.
View Article and Find Full Text PDFBMC Oral Health
October 2024
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Champolion street, Alexandria, Egypt.
Background: Environmental and genetic factors associated with canine impaction have been extensively researched, whereas the bone characteristics in the impaction area have not been thoroughly studied. Accordingly, the objective of this investigation was to provide a skeletal assessment in terms of bone density, bone microstructure, bone volume, and palatal volume in subjects with unilaterally impacted maxillary canines.
Methods: A retrospective design has been employed to address the aim of this study, where the initial pre-treatment cone-beam computed tomography (CBCT) scans of 30 patients with unilateral maxillary canine impaction were assessed.
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