FTIR and rheological studies of PMMA-based nano-dispersed gel polymer electrolytes incorporated with LiBF4 and SiO2

Singh, Simranjit; Arora, Narinder; Paul, Kamaldeep; Kumar, Rajiv; Kumar, R.

doi:10.1007/s11581-018-2742-9

Cited by 28 publications

(20 citation statements)

References 41 publications

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“…Khater et al obtained the same results when adding nano-SiO 2 to geopolymers [16]. The spectrum confirms that no new functional group has appeared after the incorporation of nano-ZnO, indicating that only a physical interaction occurred between the nanoparticles and the geopolymer matrix [20].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 65%

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Zidi

Ltifi

Ayadi

et al. 2019

Journal of Asian Ceramic Societies

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In this experimental study, we synthesized geopolymer materials with different amounts of nano-ZnO (0.3%, 0.5% and 0.7%). The effects of the nano-ZnO concentration on the mechanical, structural and thermal properties were studied in detail. XRD investigation revealed the formation of a glassy phase in all the samples and a small shift of the intense peak, which confirmed the incorporation of nano-ZnO into the geopolymer matrix. FTIR analyses showed an increase in the geopolymerization after the addition of nano-ZnO to geopolymer paste. The morphology of the inorganic polymers was studied by mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). The addition of nano-ZnO improved the ultrasonic pulse velocity and increased the compressive strength from 30 to 38 MPa. It was found that the strength reached its maximum value at a critical nano-ZnO concentration of 0.5 at.%. The thermal properties of geopolymer nano-ZnO were also investigated using thermogravimetric analysis (TGA), which showed that the incorporation of nano-ZnO decreased weight loss by the geopolymers. The density and the absorption water were also tested and all the results were discussed. ARTICLE HISTORY * The title of this manuscript should define any chemical symbols or structures by the names, so I suggest that authors change the title to "Study the effect of nano zinc oxide on structural, thermal, and mechanical properties of geopolymerbased metakaolin". "Study the effect of nano-ZnO on structural, mechanical and thermal properties of geopolymer-based metakaolin" → Effect of nano-ZnO on mechanical and thermal properties of geopolymer Abstract * Please, authors, clarify and rephrase the concept of the sentences in lines 20 and 21.Furthermore, infrared specters showed an increase of geopolymer gel content with the addition of nano-ZnO → FTIR analyses showed an increase in the geopolymerization after the addition of nano-ZnO to the geopolymer paste. * The sentences in the lines 25 and 26 need rephrasing and English grammar check, please.

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Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 65%

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Zidi

Ltifi

Ayadi

et al. 2019

Journal of Asian Ceramic Societies

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“…Furthermore, PMMA absorption bands at 1190–1141 cm −1 and shifting of oxygen bonded to CH 3 (ether group O‐CH 3 ) were also identified, proving that the in situ production of composites did not harm the proper formation of the polymer. It is noteworthy that the insertion of fillers in the matrix favored increasing the variation in the dipole moment of the characteristic groups of PMMA due to the dipolar interaction of zinc and manganese ferrites with the polar groups of polymers, such as oxygen from the acrylate group [67] . It can be observed by the increase in the intensity of the bands presented in the FTIR spectrum, and it also proves the insertion and good adhesion of the ferrite particles in the polymer matrix.…”

Section: Resultsmentioning

confidence: 80%

“…It is noteworthy that the insertion of fillers in the matrix favored increasing the variation in the dipole moment of the characteristic groups of PMMA due to the dipolar interaction of zinc and manganese ferrites with the polar groups of polymers, such as oxygen from the acrylate group. [67] It can be observed by the increase in the intensity of the bands presented in the FTIR spectrum, and it also proves the insertion and good adhesion of the ferrite particles in the polymer matrix. All nanocomposites (PMMA/MnFe, PMMA/ SiMnFe, PMMA/ZnFe, and PMMA/SiZnFe) presented intense absorption bands at 1724 cm À 1 , which were associated with stretching of the carbonyl group (C=O), which belongs to the PMMA.…”

Section: Infrared Spectroscopy (Ftir) Of Compositesmentioning

confidence: 67%

Thermal, Magnetic and Electrical Properties of PMMA Nanocomposites with Manganese and Zinc Ferrite Nanoparticles and Their Functionalization

Marques

2022

ChemistrySelect

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Manganese (MnFe 2 O 4 ) and zinc (ZnFe 2 O 4 ) ferrite nanoparticles were synthesized by the combustion method. Furthermore, the modification of these particles with a silane compound was performed. Thus, the particles produced were analyzed for morphology using Scanning electron microscopy (SEM), thermal stability, and composition assisted by Thermogravimetric analysis (TGA). It is noteworthy that the present work used an unprecedented Far-Fourier-transform infrared spectroscopy (Far-FTIR) technique to differentiate the types of ferrites and their surface functionalization, as it is a simpler, more efficient, and high-resolution method. It is worth mentioning that there are few comparative studies of zinc and manganese ferrites in the literature, much less distinguishing these ferrites simply and efficiently. In addition, there is also a lack of scientific knowledge about its chemical functionalization as compatibilization, especially silanization. Novel PMMA nanocomposites were prepared with the different synthesized particles in the contents from 0.1 % to 1.0 wt.% by the in situ polymerization technique. The nanocomposites were characterized by the analysis of SEM, TGA, Differential scanning calorimetry (DSC), and FTIR mainly by their morphology, thermal resistance, glass transition temperature, proving the chemical interactions, electrical conductivity, capacitance, and dielectric constant. Furthermore, it was evidenced that, in addition to the improvements in thermal, electrical, and interface properties, the produced nanocomposites showed excellent electromagnetic shielding properties even at low filler contents. It is noteworthy that the capacitance increases 63 % for the composite with 1.0 % zinc ferrite and 43 % for manganese ferrite. Also, the electromagnetic absorption results proved that even the low filler contents tested in this work, up to 1.0 %, presented an excellent potential for applying as electromagnetic shielding materials, reaching up to 70 % attenuation with the use of zinc ferrite. Both ferrites showed excellent results, even superior to those found in the literature for other particles with the same purposes, and still needed a lower content to achieve excellent results.

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“…Similar problems are common to other kinds of renewable energies [ 30 , 31 , 32 , 33 , 34 ]. It is, therefore, clear that, in order to reach a correct integration of renewables, a way to store energy when in excess and to use it when needed is necessary [ 35 , 36 , 37 , 38 , 39 ]. Still referring to the “duck curve”, a significant step forward in terms of efficiency and reduction of CO 2 emissions would be made if the excess of photovoltaic electricity produced in the middle of the day was stored and used after the sunset, concurring to satisfy the high demand of the evening and avoiding the over-generation risks [ 40 , 41 , 42 , 43 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…Still referring to the "duck curve", a significant step forward in terms of efficiency and reduction of CO2 emissions would be made if the excess of photovoltaic electricity produced in the middle of the day was stored and used after the sunset, concurring to satisfy the high demand of Similar problems are common to other kinds of renewable energies [30][31][32][33][34]. It is, therefore, clear that, in order to reach a correct integration of renewables, a way to store energy when in excess and to use it when needed is necessary [35][36][37][38][39]. Still referring to the "duck curve", a significant step forward in terms of efficiency and reduction of CO 2 emissions would be made if the excess of photovoltaic electricity produced in the middle of the day was stored and used after the sunset, concurring to satisfy the high demand of the evening and avoiding the over-generation risks [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

An Overview on Anodes for Magnesium Batteries: Challenges towards a Promising Storage Solution for Renewables

et al. 2021

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Magnesium-based batteries represent one of the successfully emerging electrochemical energy storage chemistries, mainly due to the high theoretical volumetric capacity of metallic magnesium (i.e., 3833 mAh cm−3 vs. 2046 mAh cm−3 for lithium), its low reduction potential (−2.37 V vs. SHE), abundance in the Earth’s crust (104 times higher than that of lithium) and dendrite-free behaviour when used as an anode during cycling. However, Mg deposition and dissolution processes in polar organic electrolytes lead to the formation of a passivation film bearing an insulating effect towards Mg2+ ions. Several strategies to overcome this drawback have been recently proposed, keeping as a main goal that of reducing the formation of such passivation layers and improving the magnesium-related kinetics. This manuscript offers a literature analysis on this topic, starting with a rapid overview on magnesium batteries as a feasible strategy for storing electricity coming from renewables, and then addressing the most relevant outcomes in the field of anodic materials (i.e., metallic magnesium, bismuth-, titanium- and tin-based electrodes, biphasic alloys, nanostructured metal oxides, boron clusters, graphene-based electrodes, etc.).

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FTIR and rheological studies of PMMA-based nano-dispersed gel polymer electrolytes incorporated with LiBF4 and SiO2

Cited by 28 publications

References 41 publications

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Thermal, Magnetic and Electrical Properties of PMMA Nanocomposites with Manganese and Zinc Ferrite Nanoparticles and Their Functionalization

An Overview on Anodes for Magnesium Batteries: Challenges towards a Promising Storage Solution for Renewables

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