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Relaxation mechanisms in low-stress polymer networks with alternative chemistries.
JADA Found Sci
April 2024
Division of Biomaterial and Biomedical Sciences, Oregon Health & Science University, Portland, OR.
Article Synopsis
- The study evaluated low-stress resin-based composites (RBCs) and their stress relaxation mechanisms, comparing them to an experimental low-stress thiourethane (TU) material.
- The experimental composites included a mix of different dimethacrylates and barium aluminosilicate filler, with tests on polymerization kinetics and stress relaxation conducted using advanced analytical techniques.
- Results indicated that TU-modified RBCs exhibited significantly higher polymerization conversion rates and stress reduction capabilities compared to traditional materials, with the TU composites and SDR Flow+ showing the most effective stress relaxation.
Effects of Acetyl Tributyl Citrate on the Mechanical Properties, Abrasion Resistance, and Cytotoxicity of the Light-Cured 3D Printing Polyurethane Resins.
3D Print Addit Manuf
December 2024
Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.
The purpose of this study was to investigate the effects of acetyl tributyl citrate (ATBC) on the mechanical properties, abrasion resistance, and cytotoxicity of a polyurethane-based 3D printing resin for mouthguard applications. The synthesized polycarbonate-based polyurethane acrylate was formulated into digital light processing printing resins with 40 wt% triethylene glycol dimethacrylate, and different percentage of ATBC were added for further characterizations. The mechanical properties and abrasion resistance, ATBC migration, and the cytotoxicity of the resins were evaluated.
View Article and Find Full Text PDFPhotochromic Film Based on a Mixed-Heteroatom-Templated Er-Incorporated Polyoxometalate Used for Inkless Prints and Anti-Counterfeiting.
ACS Appl Mater Interfaces
December 2024
Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, China.
Photochromic films have attracted increasing attention for their potential in information storage and photoswitchable devices. Developing novel photochromic materials is still a highly challenging topic. In this work, we successfully obtained an unprecedented mixed-heteroatom-templated Er-incorporated polyoxometalate [HN(CH)]NaKH{Er(HO)WO[SeTeWO][B-α-TeWO]}·117HO () by concurrently introducing the [TeO] and [SeO] heteroanion templates into the Er/WO system.
View Article and Find Full Text PDFMolecular dynamic studies of gold nanoparticles in a dental material TEGDMA.
J Mol Model
December 2024
Department of Studies in Physics, University of Mysore, Mysuru, 560006, India.
Context: In the context of biomaterials, triethylene glycol dimethacrylate (TEGDMA) is a widely used monomer in dental resins due to its favorable mechanical properties and ease of polymerization. However, improving its structural stability and enhancing its performance in biological applications remain crucial goals. This study examines the impact of incorporating gold (Au) nanoparticles into the TEGDMA matrix, focusing on their potential to improve mechanical, thermal, and optical properties for biomedical applications.
View Article and Find Full Text PDFSelf-assembly of cationic surfactant in choline chloride-based deep eutectic solvents: structural solvation and dynamics.
Phys Chem Chem Phys
January 2025
Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India.
Deep eutectic solvents (DESs) have gained popularity in various applications due to their improved environmental sustainability and biodegradability. For the present study, several polyhydric alcohols, including ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG), and glycerol (Gly), have been used as hydrogen bond donors (HBDs) and choline chloride (ChCl) as a hydrogen bond acceptor (HBA) in a fixed molar ratio to form a homogenous and stable DES. Controlled water mixing into such neat DESs has always been thought to be a quick and efficient method to tune the chemical and thermodynamic properties of DESs.
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