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Superhydrophobic Coatings Based on PMMA-Siloxane-Silica and Modified Silica Nanoparticles Deposited on AA2024-T3.
Polymers (Basel)
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Jožef Stefan Institute, Department of Physical and Organic Chemistry, Jamova c. 39, SI-1000 Ljubljana, Slovenia.
The study aimed to develop a superhydrophobic coating on the aluminium alloy 2024-T3 surface. The desired surface roughness and low surface energy were achieved with SiO nanoparticles, synthesised via the Stöber method and modified with alkyl silane (AS) or perfluoroalkyl silane (FAS). To enhance particle adhesion to the alloy substrate, nanoparticles were incorporated into a hybrid sol-gel coating composed of tetraethyl orthosilicate, methyl methacrylate, and 3-methacryloxypropyl trimethoxysilane.
View Article and Find Full Text PDFOptical Properties of Thick TiO-P25 Films.
Nanomaterials (Basel)
January 2025
Department of Environmental Engineering, University of Calabria, 87036 Rende, Italy.
In this study, TiO-P25 films on FTO substrates were synthesized using the sol-gel process and studied using Variable Angle Spectroscopy Ellipsometry (VASE) to determine their optical constants and thickness. The measurements were carried out at room temperature in the wavelength range of (300-900) nm at incident angles varying from 55° to 70°. The resulting thicknesses were found to be around 1000 nm.
View Article and Find Full Text PDFHigh- organic-inorganic hybrid dielectric material for flexible thin-film transistors and printed logic circuits.
Mater Horiz
January 2025
College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, China.
A new photopolymerizable organic-inorganic (O-I) hybrid sol-gel material, AUP@SiO-184, has been synthesized and utilized as a gate dielectric in flexible organic thin-film transistors (OTFTs). The previously reported three-arm alkoxy-functionalized silane amphiphilic polymer has yielded stable O-I hybrid materials comprising uniformly dispersed nanoparticles in the sol state. In this study, a photosensitizer was introduced, facilitating curing effects under ultraviolet light.
View Article and Find Full Text PDF'Crown-Roots' Structure Formed by Lignin-Containing Cellulose Nanofibers for All-Natural, Biorenewable Barrier Material.
Small
January 2025
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510000, China.
Degradable and cost-effective cellulose fiber-based materials are ideal substitutes for traditional plastics. However, organic additives used to enhance water and oil resistance often contain toxic substances that may migrate into food, posing health risks. In this study, inspired by tree structures, lignin-containing cellulose nanofibers (LCNFs) are used to form a "crown-roots" structure to enhance the water, oil, and gas resistance, as well as mechanical performance of composites.
View Article and Find Full Text PDFMaterial and technique fundamentals of nano-hydroxyapatite coatings towards biofunctionalization: a review.
Biomed Mater
January 2025
Chemistry, Manipal University Jaipur, Jaipur, Jaipur, 303007, INDIA.
Hydroxyapatite (HAP) nano-coatings on titanium alloys (for example, Ti6Al4V) have been used for prosthetic orthopedic implants in recent decades due to their osseointegration, bioactivity, and biocompatibility. HAP is brittle with low mechanical strength and poor adhesion on metallic surfaces, which limits its durability and bioactivity. Surface modification techniques have alleviated the imperfection of biomaterials by coating the substrate.
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