Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite

Elmadani, A. A.; Tomić, Nataša Z.; Radović, Ivana; Vuksanović, M.; Stojanović, Dušica; Heinemann, Radmila Jančić; Radojević, Vesna

doi:10.1177/0963693519879696

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…The indent was in the shape of a pyramid sheath resembling a square, and the diagonal length was then measured. The micro-hardness of the samples was also measured, using Vickers micro-hardness tester DURIMET I Kleinharteprufer (Leitz, Wetzlar, Germany) with a load of 4.9 N according to ASTM E384-16 [ 33 ]. Three indentations were performed, obtaining six diagonal lengths for the calculation of hardness.…”

Section: Methodsmentioning

confidence: 99%

Mucoadhesive Gelatin Buccal Films with Propranolol Hydrochloride: Evaluation of Mechanical, Mucoadhesive, and Biopharmaceutical Properties

et al. 2021

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This study processes and characterizes propranolol hydrochloride/gelatin mucoadhesive buccal films. Two types of gelatin are used: Gelatin from porcine skin, type A (GA), and gelatin from bovine skin (GB). The influence of gelatin type on mechanical, mucoadhesive, and biopharmaceutical characteristics of buccal films is evaluated. Fourier-Transfer infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) analysis show that GA with propranolol hydrochloride (PRH) in the film (GAP) formed a physical mixture, whereas GB with PRH (GBP) form a compound-complex. Results of mechanical testing (tensile test, hardness) revealed that GAP films exhibit higher elastic modulus, tensile strength, and hardness. A mucoahesion test shows that GBP has higher adhesion strength, while GAP shows higher work of adhesion. Both in vitro release study and in silico simulation indicated that processed films can provide effective drug transport through the buccal mucosa. In silico simulation shows improved bioavailability from buccal films, in comparison to the immediate-release tablets—indicating that the therapeutic drug dose can be markedly reduced.

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Section: Methodsmentioning

confidence: 99%

Mucoadhesive Gelatin Buccal Films with Propranolol Hydrochloride: Evaluation of Mechanical, Mucoadhesive, and Biopharmaceutical Properties

et al. 2021

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“…Elmadani et. al, [53], reported the greatest increase in hardness values with a 5wt.% loading of ZrO , resulting in a 59% increase in hardness. When ller particles, such as MWCNTs, are added to a PMMA matrix, they can interact with the polymer chains and act as reinforcement, improving the mechanical properties of the resulting composite material, including its hardness.…”

Section: Tensile Propertiesmentioning

confidence: 96%

“…The study by Elmadani et. al, [53], investigated the effect of adding ZrO or TiO particles to a PMMA matrix on the hardness of the resulting composite materials. The study reported an increase in hardness values with the addition of these particles.…”

Section: Tensile Propertiesmentioning

confidence: 99%

The Effect of Halloysite Nanotubes and Mult Wall Carbon Nanotubes on the Mechanical Properties of Poly (Methyl Methacrylate) Denture Base Nanocomposites

Aldwimi,

Alhareb,

Md.

et al. 2023

Preprint

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Polymethyl methacrylate (PMMA) resin is a popular material for denture bases due to its aesthetic properties and ease of processing, but it does have limitations in terms of its mechanical properties. PMMA resin is a brittle material and has low impact strength and fatigue resistance, which means that it is prone to cracking, chipping, and other forms of damage over time, especially when subjected to repeated stress or impact. The process of fabricating denture base composites involves using PMMA powder, benzoyl peroxide as a polymerization initiator, and a mixture of nanotube-treated fillers (multi-walled carbon nanotubes and halloysite nanotubes) as the reinforcing fillers. The fabrication process involves mixing the PMMA powder and treated nanotube fillers together with a “liquid component that contains methyl methacrylate and ethylene glycol Di methacrylate. The addition of a mixture of MWCNTs and HNTs into the PMMA denture base composite significantly improved the mechanical properties of the base composite, such as the flexural strength of 109.1MPa, flexural modulus of 3.62GPa, and tensile strength of 64.4MPa when compared to a pure PMMA matrix (G1); the Vickers hardness improvement was only 18.93kg/mm2. Therefore, the introduction of HNTs/MWCNTs mixture into PMMA is a potential way of improving the mechanical properties of PMMA denture bases (P < 0.05), which can have positive implications for their durability, wear resistance, and overall performance.

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“…All the stretching vibrations observed in the PMMA appeared in the complex/PMMA LSCs with higher intensity. The van der Waals interactions between PMMA and the metal complex are very weak, and the amount of complex used does not affect the transparency of the LSCs [29][30][31].…”

Section: Characterization Of Complex/pmma Lscsmentioning

confidence: 99%

Enhanced efficiency of silicon solar cell by new salophen complexes embedded PMMA as light concentrators

Ahmed,

Mohamed,

Reda

2024

Preprint

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The Schiff base N,N-bis(salicylidene)-o-phenylenediamine (salophen) was prepared by the condensation of salicylaldehyde with o-phenylenediamine in ethanol solution. Two new Zn(II) and Ni (II) salophen complexes, were synthesized, fully characterized by infrared (IR), 1H NMR spectroscopic measurements, UV-Vis spectra, photoluminescence (PL), and X-ray diffraction. The prepared complexes were used as phosphors to fabricate complexes/PMMA slab-based luminescent solar concentrators (LSC). The thermal stability of pure and doped PMMA polymer was examined by differential scanning calorimetry. Various parameters such as the optical energy gap, refractive index, AC and DC conductivity, dielectric constant, dielectric loss, Urbach energy, fluorescence quantum yield, and Stokes shift have been calculated and discussed. Optical absorption is carried out in wavelength region 200-900 nm at room temperature before and after the samples have been exposed to sunlight for up to 8 hrs. Photodegradation studies showed that the Zn (II) complex/PMMA LSC have the lowest rate of degradation compared with Ni (II) complex/PMMA LSC with the same concentration (0.06% weight). I–V characteristics of the photovoltaic devices with and without collectors were examined. The PV cell coupled with LSC shows an increase in maximum efficiency by about 50% compared to the normal one. This indicates that the proposed technique is very useful for improving the efficiency of solar cells.

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Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite

Cited by 9 publications

References 25 publications

Mucoadhesive Gelatin Buccal Films with Propranolol Hydrochloride: Evaluation of Mechanical, Mucoadhesive, and Biopharmaceutical Properties

Mucoadhesive Gelatin Buccal Films with Propranolol Hydrochloride: Evaluation of Mechanical, Mucoadhesive, and Biopharmaceutical Properties

The Effect of Halloysite Nanotubes and Mult Wall Carbon Nanotubes on the Mechanical Properties of Poly (Methyl Methacrylate) Denture Base Nanocomposites

Enhanced efficiency of silicon solar cell by new salophen complexes embedded PMMA as light concentrators

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