Probing the magnetoelectric response and energy efficiency in Fe3O4/epoxy nanocomposites

Sanida, A.; Stavropoulos, S.G.; Speliotis, Th.; Psarras, G. C.

doi:10.1016/j.polymertesting.2020.106560

Cited by 18 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, Fe 3 O 4 nanoparticles (diameter ranging from 10 to 50 nm) have been successfully experimented with to produce magnetic epoxy-based nanocomposites for a wide range of applications, such as microwave absorbing elements, microelectromechanical devices, micro-sensors, and systems to store/harvest energy [ 71 , 72 ]. A distinctive advantage of such nanomaterials in the mentioned applications resides in the possibility to control the final properties by adjusting the nanofiller content in the epoxy matrix.…”

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

View full text Add to dashboard Cite

This paper aims at reviewing the works published in the last five years (2016–2020) on polymer nanocomposites based on epoxy resins. The different nanofillers successfully added to epoxies to enhance some of their characteristics, in relation to the nature and the feature of each nanofiller, are illustrated. The organic–inorganic hybrid nanostructured epoxies are also introduced and their strong potential in many applications has been highlighted. The different methods and routes employed for the production of nanofilled/nanostructured epoxies are described. A discussion of the main properties and final performance, which comprise durability, of epoxy nanocomposites, depending on chemical nature, shape, and size of nanoparticles and on their distribution, is presented. It is also shown why an efficient uniform dispersion of the nanofillers in the epoxy matrix, along with strong interfacial interactions with the polymeric network, will guarantee the success of the application for which the nanocomposite is proposed. The mechanisms yielding to the improved properties in comparison to the neat polymer are illustrated. The most important applications in which these new materials can better exploit their uniqueness are finally presented, also evidencing the aspects that limit a wider diffusion.

show abstract

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

View full text Add to dashboard Cite

show abstract

“…Afterward, the mixture was stirred by hand at a slow rate in an ultrasonication bath for 10 min to obtain a homogeneous dispersion of Fe2O3, Ni nanoparticles into a polymer. The mixture was poured into templets of silicon molds with standard dimensions according to ASTM specifications for each mechanical test's specimen to be tested and cured for 72h at room temperature [15][16][17][18]. The as-received sample of unsaturated polyester resin (UPR) with hardener (MEKP) was prepared by mixing process as mentioned above.…”

Section: Nanocomposite Fabricationmentioning

confidence: 99%

Synthesis and Characterization Unsaturated Polyester Resin Nanocomposites Reinforced by Fe2O3+ Ni Nanoparticles: Influence on Mechanical and Magnetic Properties

Salman

2022

IJE

View full text Add to dashboard Cite

This investigation aims to study the effect of Fe2O3, Ni nanoparticles as a reinforcement material on the mechanical properties of unsaturated polyester (UPR) as a matrix to produce a nanocomposite material using a casting route. Various examinations and tests were conducted to define the characteristics of the manufactured nanocomposite, such as Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectrometry (EDS), and Fourier Transform Infrared Spectrometer (FTIR) analysis. The mechanical tests, including tensile, bending and hardness were performed on samples at the room temperature according to ASTM standards, while the magnetic characteristics were defined by vibrating sample magnetometer (VSM). Fe2O3 nanoparticles were incorporation into unsaturated polyester resin by different weight percentages that vary from 0 wt% to 20 wt% and a constant concentration 3 wt% of Ni nanoparticles. The images of FESEM and EDS evinced the homogeneity of F2O3, Ni nanoparticles into the pure unsaturated polyester resin (UPR). While, the improvement in Young's modulus, tensile strength, bending strength, and hardness was compared with those for the UPR. The improvement was 10.02% in young's modulus, 44.08% in tensile strength, 13.55% in bending strength, and strength in hardness. Also, the magnetic properties, including saturation magnetization (Ms), residual magnetization (Mr) and coercivity force (Hc) enhanced with an increase in the concentration of nanoparticles. The preferred percentage to improve the mechanical properties was found at 15 wt% of Fe2O3 and then decreased above this concentration, whereas the enhancement in hardness was achieved at 20 wt% of Fe2O3.

show abstract

“…The stored and retrieved energies under a DC electrical field are shown as a function of time at 50, 100, 150 and 200 V for the 3 phr BaMnO 4 specimen in Figure 3a,b, respectively. Another crucial factor for the valuation of energy storage/harvesting performance is the coefficient of energy efficiency (n eff ), which is defined as the ratio of the retrieved to stored energy via Equation (7) [37]:…”

Section: Energy Storage and Harvesting/coefficient Of Energy Efficiencymentioning

confidence: 99%

“…The coefficient of energy efficiency (n eff ) as a function of the filler content at applied voltages of 50, 100, 150 and 200 V for the time instant of 10 sec is presented in Table 1. Another crucial factor for the valuation of energy storage/harvesting performance is the coefficient of energy efficiency (neff), which is defined as the ratio of the retrieved to stored energy via Equation ( 7) [37]:…”

Section: Energy Storage and Harvesting/coefficient Of Energy Efficiencymentioning

confidence: 99%

See 1 more Smart Citation

Epoxy-Based/BaMnO4 Nanodielectrics: Dielectric Response and Energy Storage Efficiency

2021

Self Cite

View full text Add to dashboard Cite

Compact capacitive energy storing/harvesting systems could play a key role in the urgent need for more energy-efficient technologies to address both energy and environmental issues. Therein, the purpose of the present work is to develop and investigate epoxy/BaMnO4 nanocomposites at various filler concentrations, which could be applicable as compact materials systems for energy storage and harvesting. Broadband dielectric spectroscopy was used for studying the dielectric properties and the relaxation processes of the examined nanodielectrics. The energy storing/retrieving ability of the nanocomposites was also evaluated via DC charge–discharge experiments. The coefficient of energy efficiency (neff) was found for all prepared nanocomposites to evaluate the energy performance of the systems. Dielectric data divulge the existence of two matrix-related relaxations, i.e., α-mode and β-mode, attributed to the glass-to-rubber transition of the polymer matrix and re-orientation of polar side groups, respectively. Interfacial polarization was also identified in the low-frequency and high-temperature region. The 7 phr BaMnO4 nanocomposite exhibits the best performance in terms of the stored and harvested energies compared to all systems. On the other hand, the 5 phr, 3 phr and 1 phr nanocomposites display optimum energy performance, reaching high values of neff.

show abstract

Probing the magnetoelectric response and energy efficiency in Fe3O4/epoxy nanocomposites

Cited by 18 publications

References 31 publications

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Synthesis and Characterization Unsaturated Polyester Resin Nanocomposites Reinforced by Fe2O3+ Ni Nanoparticles: Influence on Mechanical and Magnetic Properties

Epoxy-Based/BaMnO4 Nanodielectrics: Dielectric Response and Energy Storage Efficiency

Contact Info

Product

Resources

About