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Comparative Evaluation of Surface Roughness and Color Stability of Polyetheretherketone with Conventional Interim Prosthetic Materials: An Study.
J Contemp Dent Pract
October 2024
Department of Prosthodontics, Government Dental College, Kozhikode, Kerala, India, Orcid: https://orcid.org/0000-0003-1456-3851.
Aim: The aim of this study was to compare the surface roughness and color stability of polyetheretherketone (PEEK) with those of conventional interim prosthetic materials like polymethylmethacrylate, bis-acrylic composite, and rubberized diurethane dimethacrylate, following immersion in solutions of varying pH value.
Materials And Methods: A total of 320 circular discs with 10 mm diameter and 2 mm height were divided based on the fabrication ( = 80)-group A: polymethylmethacrylate; group B: bis-acrylic composite; group R: rubberized diurethane; and group P: hot-pressed PEEK-and were subjected to baseline measurement of roughness ( = 40) and color ( = 40) using 3D profilometer and UV-Vis spectrophotometer, respectively. Later, 10 samples from each group were immersed in distilled water, black coffee, green tea, and Pepsi, respectively, for 120 days, and measurements of roughness and color were repeated.
Adaptive Phase Change Microcapsules for Efficient Sustainable Cooling.
ACS Appl Mater Interfaces
January 2025
School of Artificial Intelligence Science and Technology, University of Shanghai for Science and Technology, Shanghai 200093, China.
Passive radiative cooling has recently gained significant attention as a highly promising technology that offers a zero-energy and electricity-free solution to tackle the pressing issue of global warming. Nevertheless, research efforts have predominantly focused on enhancing daytime and hot-day radiative cooling efficacy, often neglecting the potential downsides associated with excessive cooling and the consequent increased heating expenses during cold nights and winter days. Herein, we demonstrate a micro-nanostructured engineered composite film that synergistically integrates room-temperature adaptive silica-shell/oil-core phase change microcapsules (S-PCMs) with commercially available cellulose fibers.
View Article and Find Full Text PDFAn Extensive Study of an Eco-Friendly Fireproofing Process of Lignocellulosic × Particles and Their Application in Flame-Retardant Panels.
Polymers (Basel)
January 2025
Laboratory of Physical Chemistry of Materials (LCPM), Campus Fanar, Faculty of Sciences II, Lebanese University, Fanar, Jdeidet P.O. Box 90656, Lebanon.
Increasing the flame retardancy of lignocellulosic materials such as × can effectively enable their wide use. This study examines the fireproofing process of Miscanthus particles using an eco-friendly process by grafting phytic acid and urea in aqueous solution. Miscanthus particles underwent a steam explosion step before being grafted.
View Article and Find Full Text PDFSynthesis of Nanocrystal-Embedded Bulk Metallic Glass Composites by a Combination of Mechanical Alloying and Vacuum Hot Pressing.
Materials (Basel)
January 2025
Research Center of Digital Oral Science and Technology, College of Oral Medicine, Taipei Medical University, Taipei 110-301, Taiwan.
Bulk metallic glasses (i.e., BMGs) have attracted a lot of research and development interest due to their unique properties.
View Article and Find Full Text PDFLarge Improvements in the Thermoelectric Properties of SnSe by Fast Cooling.
Materials (Basel)
January 2025
Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
As reported during the last five years, SnSe is one of the leading thermoelectric (TE) materials with a very low lattice thermal conductivity. However, its elements are not as heavy as those of classical thermoelectric materials like PbTe or BiTe. Its outstanding TE properties were revealed after repeated purification steps to minimize the amount of oxygen contamination, followed by spark plasma sintering.
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