Chemical durability, electrical and dielectric properties of the ternary system (50-x)K2O–xMnO–50P2O5 phosphate glasses

Ahmina, W.; Moudane, M. El; Shaim, A.; Zriouil, Mohammed; Taïbi, M.

doi:10.1016/j.matpr.2019.04.003

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…Indeed, at 373 K, the highest conductivity that can be achieved is around 37 (S

cm −1 ) for both DS used. A typical increase of the electrical conductivity with increasing temperature can be observed which is consistent with the literature [ 37 , 38 ]. This trend is related to the increase in the mobility of the charge carriers derived from π-electrons, resulting overall in a higher charge density.…”

Section: Resultssupporting

confidence: 91%

“…These results indicate that at these frequencies, the chain rearrangement according to the electric field is typically stronger and is affected by the charge density. As the DS increases, better chains rearrangements are achieved, leading to a better charge mobility, hence higher electric conductivity values [ 37 , 38 ]. In this case, solution-like behavior is achieved.…”

Section: Resultsmentioning

confidence: 99%

“…Passing from the lower value of SPAES_0.75 to the higher value of SPAES_2.4, the electrical conductivity changes up to five orders of magnitude, therefore these two samples were taken as references and used for further investigations. [37,38]. In this case, solution-like behavior is achieved.…”

Section: Spaess Synthesis and Characterization: 1 H-nmr Pt Dsc And Electrical Conductivity Analysesmentioning

confidence: 85%

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Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films

et al. 2021

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Poly(3,4-ethylenedioxythiophene) (PEDOT) plays a key role in the field of electrically conducting materials, despite its poor solubility and processability. Various molecules and polymers carrying sulfonic groups can be used to enhance PEDOT’s electrical conductivity. Among all, sulfonated polyarylether sulfone (SPAES), prepared via homogenous synthesis with controlled degree of sulfonation (DS), is a very promising PEDOT doping agent. In this work, PEDOT was synthesized via high-concentration solvent-based emulsion polymerization using 1% w/w of SPAES with different DS as dopant. It was found that the PEDOT:SPAESs obtained have improved solubility in the chosen reaction solvents, i.e., N, N-dimethylformamide, dimethylacetamide, dimethyl sulfoxide, and N-methyl-2-pyrrolidone and, for the first time, the role of doping agent, DS and polymerization solvents were investigated analyzing the electrical properties of SPAESs and PEDOT:SPAES samples and studying the different morphology of PEDOT-based thin films. High DS of SPAES, i.e., 2.4 meq R-SO3−g−1 of polymer, proved crucial in enhancing PEDOT’s electrical conductivity. Furthermore, the DMSO capability to favor PEDOT and SPAES chains rearrangement and interaction results in the formation of a polymer film with more homogenous morphology and higher conductivity than the ones prepared from DMAc, DMF, and NMP.

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“…Indeed, at 373 K, the highest conductivity that can be achieved is around 37 (S

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Spaess Synthesis and Characterization: 1 H-nmr Pt Dsc And Electrical Conductivity Analysesmentioning

confidence: 85%

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Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films

et al. 2021

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“…Ahmina et al [ 48 ] suggested that by adding MnO to phosphate glasses, the chemical resistance was enhanced due to the increase in the cross-link between the phosphate chains by the formation of P–O–Mn bonds. These changes can be explained by the effect of cation substitution on the glass network structure.…”

Section: Resultsmentioning

confidence: 99%

Elaboration and Characterization of Vitreous Fertilizers and Study of Their Impact on the Growth, Photosynthesis, and Yield of Wheat (Triticum durum L.)

et al. 2021

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Four different phosphate glass formulations (F0, F1, F2, and F3) were developed according o wheat nutrient requirements to be used as controlled-release fertilizers. These glasses contain macro-elements (P2O5-K2O-CaO-MgO), with the addition of microelements (Fe-Mn-Zn-B-Cu-Mo) in each formulation. The effects of these elements’ addition on thermal properties, glass structure, and dissolution behaviors were investigated. Results showed that these glasses are composed essentially of metaphosphate chains and that the addition of micronutrients could change the chemical durability of phosphate glasses. A greenhouse experiment was performed using wheat (Triticum durum L.) to evaluate the efficiency of the four glasses, with or without application of chemical nitrogen (N) (N + VF and VF, respectively). The different formulas were tested using two rates of 0.3 and 1 g per plant. In addition to the vitreous fertilizer formulations, two other treatments were applied: control treatment with no amendment and Nitrogen-Phosphorus-Potassium treatment with the application of the conventional fertilizers on the base of optimal rates. After four months of cultivation, vitreous fertilizers application significantly improved growth (7% to 88%), photosynthetic (8% to 49%) parameters, and yield (29% to 33%) compared to NPK treatment and to the control. It has been found that formulas F1, F2, and F3 may constitute a potential alternative to conventional fertilization due to their positive impact on wheat production and can be used in practice as an environmentally controlled-release fertilizer.

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Impact of MoO3 concentration, frequency and temperature on the dielectric properties of zinc phosphate glasses

Ibrahim

2020

Chinese Journal of Physics

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Chemical durability, electrical and dielectric properties of the ternary system (50-x)K2O–xMnO–50P2O5 phosphate glasses

Cited by 5 publications

References 15 publications

Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films

Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films

Elaboration and Characterization of Vitreous Fertilizers and Study of Their Impact on the Growth, Photosynthesis, and Yield of Wheat (Triticum durum L.)

Impact of MoO3 concentration, frequency and temperature on the dielectric properties of zinc phosphate glasses

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