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Methyl methacrylates - Springer Nature

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Last Updated: 13 April 2022

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Thermal Degradation of Poly (Styrene-Co-Methyl Methacrylate) in the Presence of AlI_3 Nanoadditive

The effect of various concentrations of AlI_3 NA was investigated on PSCMMA's thermal behavior. Composites made with AlI_3 NA were manufactured in an acetone common solvent by altering the percentage of AlI_3 NA from 0 to 5% by weight. Pure PSCMMA1 burns 5 times faster than PSCMMA6 nanocomposites, according to PSCMMA6 nanocomposites.

Source link: https://doi.org/10.1007/s11837-022-05154-x


Poly (methyl methacrylate) grafted wheat straw for economical and eco-friendly treatment of oily wastewater

This research used a simple radical polymerization to improve agricultural waste biomass wheat straw's oil adsorption efficiency by grafting biocompatible poly. For the first time in the quest for a cost-effective and eco-friendly adsorbent for the adsorptive treatment of oily wastewater, the PMMA grafted WS was thoroughly investigated. SEM morphology, BET analysis, EDX and XPS elemental analysis, FTIR, and contact angle measurements confirmed the effectiveness of flawless WS and subsequent PMMA graft grafting. According to alkaline hydrogen peroxide pre-treatment, the inner interconnected tubular pore channels of WS are gradually exposed, as shown by SEM photos. As shown by the 0° oil contact angle for WS-g-PMMA film, PMMA grafting significantly enhanced oil adhesivity. Batch oil adsorption studies used variable adsorbent dosages and oil emulsion concentrations to analyze oil absorptivity. The WS-g-PMMA surface and oil droplets showed specific improvement in adsorption capacity when compared to those of the pristine and pretreated due to its increased accessibility to exposed inner tubular pore channels and strong hydrophobic interactions between the WS-g-PMMA surface and oil droplets. The WS-G-PMMA's high oil adsorption capacity makes it a very promising material for oily wastewater treatment. This report serves as a start for determining the suitability of wheat straw for treating extremely difficult waterways, such as steam assisted gravity drainage produced BTEX and PAH-containing water that is also hydrophobic like diesel oil.

Source link: https://doi.org/10.1007/s10570-022-04481-1


Novel cinnamon-laden nanofibers as a potential antifungal coating for poly(methyl methacrylate) denture base materials

Objects: To minimize Candida albicans adhesion and/or proliferation, it is necessary to improve the surface of denture base material by coating it with cinnamon-laden nanofibers. Heat-cured poly specimens were processed and coated, or not, with cinnamon-laden polymeric nanofibers. Representative SEM morphological analysis was conducted to determine the presence or absence of C. albicans on the fabrics. Cell toxication was determined using Alamar blue assay. The cinnamon-laden nanofibers contributed to growth arrests in C. albicans. The SEM images show that running fungal counts account for a dramatic reduction in CFU/mL directly related to cinnamon content. Conclusions The deposition of 20 wt. % cinnamon-laden nanofibers onto PMMA surfaces resulted in a significant decrease in the adhesive and/or proliferative capacity of C. albicans, as well as maintaining epithelial cells' viability, although maintaining epithelial cells' viability. Patient non-adherence to medications and mishaged prostheses use are both factors contributing to the high incidence of denture stomatitis in denture stomatitis in patients.

Source link: https://doi.org/10.1007/s00784-021-04341-5


Acrylamide-ran-methyl methacrylate copolymers synthesized by copper(0)-catalyzed living radical polymerization

Gel permeation chromatography analyzed copolymers' number and molecular weights, as well as their distribution of molecular weights and molecular weight. PAM-ran PMMA's rise linearly with monomer conversion, although narrow molecular weight distribution was achieved. The reactivity ratios of r _1 and r _2 were estimated to be 0. 81 and 3. 21, respectively, using the Fineman-Ross equation. The number of AM unites in PAM- ran-PMMA copolymers increased with the increase in AM/MMA's molar ratios. TGA reported that copolymers with a greater percentage of AM unit showed a higher thermal stability. The obtained PAM-run-PMMA copolymer was used as a macroinitiator to carry out a Cu-catalyzed chain extension experiment, which resulted in an increase in Mn and revealed the polymerization's living characteristics.

Source link: https://doi.org/10.1007/s13726-022-01050-y


Poly(methyl methacrylate)-based ferroelectric/dielectric laminated films with enhanced energy storage performances

The ferroelectric phase poly is introduced in order to raise the energy storage capacity of poly-based flexible film dielectric capacitors. We created a double-layer structure prepared by hot pressing at the melting point of the polymers to minimize the effect of the blended structure on the breakdown strength. In the double-layer reinforced PMMA and PVDF composite films, the discharge energy density of 14. 13 J/cm3 is one times larger than that of pure PMMA films and six times larger than commercially available biaxially oriented polypropylene capacitors, with a maximum electric field of 13. 13 J/cm3/3 being obtained at a higher electric field of 700 kV/mm, which is one times larger than that of commercially manufactured biaxially oriented polypropy Graphical abstract A two-layer structure was constructed by hot pressing at the melting point of the polymers' temperature at the melting point. The discharge rate at high-field electric remains at 75%, but the energy storage density can reach 14. 13 J/cm3, which is much larger than others composite.

Source link: https://doi.org/10.1007/s42114-022-00451-0

* 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