Advanced searches left 3/3

2-hydroxyethyl Methacrylate - DOAJ

Summarized by Plex Scholar
Last Updated: 13 May 2022

* If you want to update the article please login/register

Synthesis of Poly(2-Acrylamido-2-Methylpropane Sulfonic Acid) and its Block Copolymers with Methyl Methacrylate and 2-Hydroxyethyl Methacrylate by Quasiliving Radical Polymerization Catalyzed by a Cyclometalated Ruthenium(II) Complex

The first instance of quasiliving radical polymerization and copolymerization of 2-acrylamide-2-propane sulfonic acid without prior protection of its strong acid groups has been reported by [Ru 2]PF 6 complex. Both PAMPS' increase in molar composition and the second block's inclusion in the copolymer are strongly related to these findings. The right combination of PAMPS block copolymer with hydrophilic or hydrophobic monomers would allow fine-tuning of the materials' physical properties, enabling the manufacture of biodiesel production, such as polyelectrolyte membrane fuel cells or catalytic membranes.

Source link: https://doi.org/10.3390/polym12081663


Effect of Er:YAG laser cavity preparation on the bond strength of 2-hydroxyethyl methacrylate-free and 2-hydroxyethyl methacrylate-rich self-etch adhesive systems: An in vitro study

This research was carried out to determine the effects of Er:YAG laser cavity preparation on the microtensile bond strength of 2-hydroxyethyl methacrylate-rich and HEMA-free one-step self-etch adhesive systems. With Er:YAG LASER, Cavities were prepared in 40 teeth with carbide bur and in other 40 teeth. The mean values of the bond strength were calculated after the installation of restoration using a universal testing machine. Results: When the cavities were made with bur instead of those with Er:YAG laser, the overall microtensile bonding strength was higher. Regardless of the adhesive system, the bond strengths of single-bottle self-etching dentin bonding agents to bur-prepared cavities were higher than those to laser-prepared cavities. Conclusion: The effect of Er:YAG laser for cavity preparation did not produce improved results when tested using microtensile bond strength with seventh-generation bonding agents, Adper Easy One and G-Bond, was not shown.

Source link: https://doi.org/10.4103/1735-3327.270789


Gamma irradiation-induced grafting of 2-hydroxyethyl methacrylate (HEMA) onto ePTFE for implant applications

Using the gamma irradiation method, 2-hydroxyethyl methacrylate was grafted onto the ePTFE surface to extend the ePTFE's capability as a biomaterial. In addition, the grafted ePTFE showed a higher percentage of water uptake than untreated ePTFE. The presence of N peaks in the XPS analysis showed that grafted ePTFE could adsorb protein, which was denoted in the presence of N peaks. Similarly, the emergence of the globular mineral on the grafted ePTFE surface was successfully documented by the EDX using FESEM analysis, with a ratio of 1. 94 for Ca:P minerals.

Source link: https://doi.org/10.1016/j.net.2020.03.016


Implantation of Collagen Iv/Poly(2-Hydroxyethyl Methacrylate) Hydrogels Containing Schwann Cells into the Lesioned Rat Optic Tract

We've reviewed these PolyHEMA hydrogels and their ability to cross CNS injury sites. On examination 2–4 months later, there was good consistency between the implants and CNS tissue, as well as soaring numbers of viable Schwann cells were found within the hydrogel matrices. According to an immunohistochemical study, the collagen IV-impregnated PolyHEMA hydrogels preferredentially supported the transplanted Schwann cells but not host glial cells such as astrocytes or oligodendroglia. Macrophages were also discovered within the sponge structure. The retinal axons were found within transplanted hydrogel sponges, with 40% of the cases increasing for distances up to 350–450 m within the polymer network. The findings show that impregnating PolyHEMA sponges with collagen IV can change the host glial response and support transplanted Schwann cells. This report also contains new details on how biomaterials can be used to modify and bridge CNS injury sites.

Source link: https://doi.org/10.1177/096368979800700406


CAMPHORQUINONE AS A PHOTOINITIATOR IN THE POLYMERIZATION OF 2-HYDROXYETHYL METHACRYLATE IN AQUEOUS SOLUTION: A KINETIC STUDY

In the pH range 6. 0 to 6. 0, the photoinitiated polymerization of 2-hydroxyethyl methacrylate using camphorquinone triethanolamine system has been investigated. With an increase in the pH of the solution, TEOHA radicals' reactivity increases with a change in the solution's second-order rate constants. A linear relationship exists between kobs and the inverse of solution viscosity, which leads to the quenching of CQ's excitious state along with an increase in the medium's viscosity.

Source link: https://doaj.org/article/0a8058237ce046b8a52074478a0f4781


Characterization of pore structure in biologically functional poly(2-hydroxyethyl methacrylate)-poly(ethylene glycol) diacrylate (PHEMA-PEGDA).

A copolymer made of poly and poly diacrylate is versatile in terms of structure. A variety of surface architectures and pore morphologies were created by adjusting porogen volume and type using phase separation technology. The PHEMA-PEGDA frameworks developed in this report may help to engineer tissue scaffolds with both structural stability and biological activity, according to the researchers.

Source link: https://doi.org/10.1371/journal.pone.0096709


Sensitization potential of dental resins: 2-hydroxyethyl methacrylate and its water-soluble oligomers have immunostimulatory effects.

Expression levels of either or both of CD54 and CD86 cells in THP-1 cells have been shown to increase by sensitizing agents. These dental resin monomers have lower sensitizing capabilities than NiSO4's NiSO4. Dental resin monomer-induced sensitization can be attributed not only to the chemical reaction related to the methacryloyl group but also to the compound's architecture. The result that a water-soluble PHEMA oligomer with a relatively high molecular weight displayed negligible cytotoxicity, despite a rise in CD54 after exposure to PHEMA at a high risk is of particular concern. This research provides insight into the origins of allergic reactions to dental resin products in clinical use and may lead to the production of more biocompatible restorative materials in the future.

Source link: https://doi.org/10.1371/journal.pone.0082540


Curcumin/Liposome Nanotechnology as Delivery Platform for Anti-inflammatory Activities via NFkB/ERK/pERK Pathway in Human Dental Pulp Treated With 2-HydroxyEthyl MethAcrylate (HEMA)

Free resin monomers of 2-hydroxyethyl methacrylate propagate into the bloodstream, affecting cellular stability, during restorative dentistry work. In reaction to 3 and 5 mmol L–1 HEMA treatment, the study reveals the importance of including curcumin bioactive component in liposomal formulations to restore dental pulp stem cell homeostasis. Cell proliferation and tumor production rises, as well as the block of inflammatory cytokines secretion, is inhibited by the inhibition of NFkB/ERK and pERK signaling cascades, which can be reversed by RNA treatment of NFkB/ERK and pERK signaling cascade. CurLIP, the natural nanocarrier, has multiple biochemical and molecular cascades that induce anti-inflammatory activity in response to HEMA treatment in human dental pulp stem cells, making it an innovative endodontic drug with the ability to enhance dental hygiene care with a major human community effect.

Source link: https://doi.org/10.3389/fphys.2019.00633


New crosslinked hydrogels derivatives of 2-hydroxyethyl methacrylate: Synthesis, modifications and properties

It describes the latest 2-hydroxyethyl methacrylate hydrogels in the form of microbeads with various degrees of crosslinking. As crosslinking monomers bis[4 phenyl]-sulfide and ethylene glycol dimethacrylate were used, they were used. Two alternative methods in a suspension copolymerization process were used to produce the new hydrogels. In addition, their sorptive capabilities in removing Cu, Zn, Cd, and Pb ions from aqueous solutions were also demonstrated. To describe the adsorption characteristics of the selected modified hydrogels, the Langmuir and Freundlich isotherm models are used.

Source link: https://doi.org/10.3144/expresspolymlett.2012.81


Correlation between Tribological Properties and the Quantified Structural Changes of Lysozyme on Poly (2-hydroxyethyl methacrylate) Contact Lens

The most common reason for contact lens wear discontinuation is ocular pain. Although the tear proteins as a lubricant could aid contact lens assembly, some in vitro studies indicated that the amount of adsorbed proteins could not only explain the lubricating results of adsorbed proteins. With the increased friction coefficients that are considered important for the development of contact lens material designs with improved adaptation, our results show that the protein–protein interactions help stabilize the lysozyme on pHEMA.

Source link: https://doi.org/10.3390/polym12081639

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions