Investigation of fluorine binding by lithium barium alkali silicate glass

Kiprianov, A. A.; Pankratova, Nadezda

doi:10.1134/s1087659614020096

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…Simultaneously, the fluorine percentage is significantly reduced. Previous studies have shown that the loss of fluorine from alkali silicate melts containing fluorine additives is likely to occur simultaneously in the form of both alkali metal fluoride (KF) and silicon tetrafluoride (SiF 4 ) . A detailed explanation of the change in chemical composition during melting of these glasses can be found in a previous work …”

Section: Resultsmentioning

confidence: 99%

Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System

2015

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A study on the devitrification of fluorophyllosilicate glass precursors is presented. The research has been focused on the early stages of the crystallization process and shows the variation in the crystallization mechanism with increasing the fluorine content. The devitrification process has been studied by means of differential scanning calorimetry (DSC) and fieldemission scanning electron microscopy (FESEM). These complementary techniques established that both surface (heterogeneous nucleation) and volume (internal homogeneous nucleation) mechanisms are present in the crystallization process of fluorophlogopite-based glasses, the latter being predominant. By increasing the percentage of fluorine in the parent glass, a variation in the location of the first crystals developed from the internal volume of the glass toward the external surface was observed. Such an alteration in the crystallization mechanism was also checked by examining the microstructure of crystallized samples prepared under short-time treatments.

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Section: Resultsmentioning

confidence: 99%

Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System

2015

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“…36 Many studies have reported that fluorine could be volatilized in the form of SiF 4 from glass melt. 37 The presence of Al 2 O 3 is accepted to help retain F in the glass composition. Incorporating a basic oxide into the glass composition ensures that there is at least one non-bridging O per Si atom/ion, leaving sufficient Al 3+ ions free to bind with the F − .…”

Section: X-ray Fluorescence Analysis (Xrf)mentioning

confidence: 99%

Metronidazole‐loaded glass ionomer dental cements

Salehi

Behnamghader

Pazouki

et al. 2020

Int J Applied Ceramic Tech

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The incorporation of antibiotics in glass ionomer cements (GICs) for the treatment of periodontal diseases has been considered as an effective therapeutic strategy. In this research, metronidazole was added to silanized glass fiber‐reinforced GICs. The fiber‐reinforced cements containing antibiotic were made by adding 6.0 w% silanized E‐glass fibers and 3.0 w% metronidazole to the GIC powder. The GIC reinforced with 6.0 w% silanized fibers showed maximum values of 57 MPa, 2.1 GPa, and 1.3 MPa‧m0.5 for the flexural strength, flexural modulus, and fracture toughness, respectively. The release of metronidazole showed a two‐step release in which about 65% of total amount was released in the first 24 hours. Antibacterial test exhibited no bacteria number (CFU/mL) in the presence of GIC containing metronidazole. In addition, gene expression of Streptococcus mutans was performed by real‐time PCR method. Based on PCR results, metronidazole significantly reduced the gtfB and gtfC genes expression, related to adherence and biofilm formation, up to 98% after 7 days in comparison to the control one (P < .001). According to the obtained results, GICs reinforced with silanized fibers containing metronidazole are effective in inhibiting bacteria associated with caries and also acceptable mechanical properties for the development of the next generation of restoration dental materials.

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“…The glass was synthesized from oxides and carbon ates (SiO 2 (chemical pure grade), Li 2 CO 3 (analytical grade), BaCO 3 (chemical pure grade), LiF (chemical pure grade), and LiCl (analytical grade)) according to the standard technique [1].…”

Section: Experimental Techniquementioning

confidence: 99%

“…The glass's chemical analysis was carried out using the following methods: spectrophotometry (silicon content determination), atom emission (lithium and cesium contents determination), potentiometric (flu orine content determination), and titration (barium and chlorine contents determination) (see [1]). …”

Section: Experimental Techniquementioning

confidence: 99%

Electrode properties of lithium-barium and lithium-cesium-silicate glass with fluorine and chlorine additives

Kiprianov

Pankratova

2015

Glass Phys Chem

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Hydrogen function of glass of the Li 2 O-LiHal-BaO-SiO 2 and Li 2 O-LiHal-Cs 2 O-SiO 2 (Hal = F, Cl) series with halogen content (from synthesis) of 0-14 mass % has been investigated. It has been established that fluorine and chlorine additives promote the increase of the hydrogen function extension for glass of the Li 2 O-LiHal-BaO-SiO 2 series. The results concerning the halogen embedding into the alkali slicate network have been compared with the data in the literature. Keywords: alkali silicate glass containing fluorine and chlorine, hydrogen function

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Investigation of fluorine binding by lithium barium alkali silicate glass

Cited by 9 publications

References 3 publications

Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System

Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System

Metronidazole‐loaded glass ionomer dental cements

Electrode properties of lithium-barium and lithium-cesium-silicate glass with fluorine and chlorine additives

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Investigation of fluorine binding by lithium barium alkali silicate glass

Cited by 9 publications

References 3 publications

Crystal Growth of F‐Phlogopite from Glasses of the SiO2–Al2O3–MgO–K2O–F System

Crystal Growth of F‐Phlogopite from Glasses of the SiO2–Al2O3–MgO–K2O–F System

Metronidazole‐loaded glass ionomer dental cements

Electrode properties of lithium-barium and lithium-cesium-silicate glass with fluorine and chlorine additives

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Product

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Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System

Crystal Growth of F‐Phlogopite from Glasses of the SiO₂–Al₂O₃–MgO–K₂O–F System