Polymer matrix composites have garnered the interest of the dentistry sector. Nano-fillers are frequently used as reinforcements in these composites to enhance their characteristics. Poly (methyl methacrylate) was filled with date seed nanoparticles (DSNP) and titanium oxide nanoparticles (TiONP). In this work, two nanofillers (DSNP and TiONP) were analyzed using Fourier-transform infrared spectroscopy (FTIR). In addition, the features of the PMMA-nanofiller composite were experimentally evaluated via compression, micro-hardness, wear rate (WR), and coefficients of friction (µ) testing. Utilizing a scanning electron microscope (SEM), the microstructure of the PMMA-DSNP composite was examined. The results of the experiments on the nanocomposites demonstrated that the elastic modulus, microhardness, wear resistance, and friction resistance increased with an increase in DSNP content to 1.2 wt, in comparison to TiONP at the same concentration. Finally, according to the guidelines, the ideal weight was determined to be 1.2 wt%, filler in the form of DSNP, at a normal load of 10 N.
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http://dx.doi.org/10.1038/s41598-022-20393-3 | DOI Listing |
Molecules
December 2024
Dipartimento di Chimica e Biologia, and INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy.
Plastic pollution is a global problem affecting the environment and, consequently, people's well-being. Careful and timely end-of-life plastic recycling is certainly a way, albeit a partial one, to remedy the problem. The immediate identification and selection of the different types of plastic materials in the recycling process certainly facilitate its recovery and reuse, allowing the damage caused by plastic emission into the environment to be limited.
View Article and Find Full Text PDFMolecules
December 2024
Aix Marseille Univ, CNRS, Chemistry Department, Institute of Radical Chemistry (ICR), 13397 Marseille, France.
Nanocomposite materials composed of an organic matrix and an inorganic nanofiller have been the subject of intense research in recent years. Indeed, the synergy between these two phases confers improved properties thanks to an increased surface-volume ratio, which reinforces the interactions between the particles and the polymer matrix. These interactions depend on many factors such as the shape, size and dispersion of the nanoobjects.
View Article and Find Full Text PDFMacromol Rapid Commun
January 2025
School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China.
Polymer cubosomes (PCs) have garnered significant interest in the field of nanomaterials and nanotechnology due to their unique properties and potential applications. However, the fabrication of PCs remains challenging. Polymerization-induced self-assembly (PISA) is recognized as an efficient method for producing a variety of polymer particles, including PCs.
View Article and Find Full Text PDFPharm Dev Technol
January 2025
Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China.
In this paper, the pH-sensitive targeting functional material NGR-poly(2-ethyl-2-oxazoline)-cholesteryl methyl carbonate (NGR-PEtOz-CHMC, NPC) modified quercetin (QUE) liposomes (NPC-QUE-L) was constructed. The structure of NPC was confirmed by infrared spectroscopy (IR) and nuclear magnetic resonance hydrogen spectrum (H-NMR). Pharmacokinetic results showed that the accumulation of QUE in plasma of the NPC-QUE-L group was 1.
View Article and Find Full Text PDFRSC Adv
January 2025
Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo 05508-000 São Paulo SP Brazil
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