Synthesis, characterization and thermal properties of PMMA/CuO polymeric nanocomposites

Soleimani, Esmaiel; Moghaddami, Reyhaneh

doi:10.1007/s10854-017-8440-y

Cited by 17 publications

(6 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high-resolution scan of Cu 2p is displayed in Figure 2g, a double peak with binding energies at 932.75 and 952.75 eV is attributed to Cu 2p3/2 and Cu 2p1/2 of Cu 2+ in CuO, respectively. Also, the gap between the Cu 2p3/2 and Cu 2p1/2 energy levels is 20.0 eV, corresponding to the split orbit for Cu 2+ (Soleimani and Moghaddami, 2017). These results can be considered to show that the Cu was oxidized to CuO.…”

Section: Resultsmentioning

confidence: 99%

Graphene-Modified 3D Copper Foam Current Collector for Dendrite-Free Lithium Deposition

Dang

Bai

et al. 2019

Front. Chem.

View full text Add to dashboard Cite

Lithium (Li) metal is regarded as the ideal anode for rechargeable Li-metal batteries such as Li-S and Li-air batteries. A series of problems caused by Li dendrites, such as low Coulombic efficiency (CE) and a short circuit, have limited the application of Li-metal batteries. In this study, a graphene-modified three-dimensional (3D) Copper (Cu) current collector is addressed to enable dendrite-free Li deposition. After Cu foam is immersed into graphene oxide (GO) suspension, a spontaneous reduction of GO, induced by Cu, generates reduced graphene oxide on a 3D Cu (rGO@Cu) substrate. The rGO@Cu foam not only provides large surface area to accommodate Li deposition for lowering the local effective current density, but also forms a rGO protective layer to effectively control the growth of Li dendrites. As current collector, the rGO@Cu foam shows superior properties than commercial Cu foam and planar Cu foil in terms of cycling stability and CE. The rGO@Cu foam delivers a CE as high as 98.5% for over 350 cycles at the current density of 1 mA cm−2. Furthermore, the full cell using LiFePO4 as cathode and Li metal as anode with rGO@Cu foam as current collector (LiFePO4/rGO@Cu-Li) is assembled to prove the admirable capacities and indicates commercialization of Li-metal batteries.

show abstract

Section: Resultsmentioning

confidence: 99%

Graphene-Modified 3D Copper Foam Current Collector for Dendrite-Free Lithium Deposition

Dang

Bai

et al. 2019

Front. Chem.

View full text Add to dashboard Cite

show abstract

“…When the number of CrCl 2 particles inside the polymer rose, the optical constants increased and the forbidden energy gap reduced. E. Soleimani and R. Moghaddami investigated the optical properties of PMMA with copper oxide (CuO) nanocomposites by casting method for preparing these nanocomposites with different concentrations of CuO and discovered that the absorption coefficient, extinction coefficient, refractive index, and real and imaginary dielectric constants of (PMMA/CuO) nanocomposites increased with increasing concentrations of copper oxide nano particles [12]. With increasing copper oxide nanoparticle concentrations, the energy band gap of (PMMA/CuO) nanocomposites reduced.…”

Section: Introductionmentioning

confidence: 99%

Analyses the Scope of Solar Radiation Transmittance and Physical Properties of Polymethyl Methacrylate/Zinc Oxide Nanocomposite Films

Gaid

Al–Kadhemy

Saeed

2023

Al-Mustansiriyah Journal of Science

View full text Add to dashboard Cite

Films of poly (methyl methacrylate) PMMA and PMMA doped with zinc oxide nanoparticles (ZnONPs) with different amounts were created using the solution casting technique. Different amounts of zinc oxide ranging from (0.001-0.005) g in step 0.001g were investigated and added to a polymer of constant amount (0.5) g of PMMA in 15ml Tetrahydrofuran (THF). It is known that increasing the amount of ZnONPs in this technique contributes to the appearance of ZnONP peaks within the polymer. The differences in the XRD spectrum show that the nanomaterial changed the microstructure of the polymer. This was discovered using a nanoscale scanning electron microscope (SEM). SEM revealed that the PMMA polymer surface exhibit an amorphous nature with a smooth surface. Fourier Transform Infrared (FTIR) spectroscopy demonstrates that there was no chemical reaction between the PMMA polymer and ZnONPs. Spectrophotometric measurements of absorbance and transmittance in the wavelength range 200- 900 nm were used to evaluate the optical characteristics of all films. Increased amounts of ZnONPs improve the absorbance, absorption coefficient, and extinction coefficient of PMMA polymer. With increasing ZNO content, the variance in computed optical energy gap values has been interpreted, the optical energy gap dropped from 4.65 eV to 4.10 eV. The solar radiation intensity in Baghdad for the pure PMMA films and PMMA/ZnO nanocomposites was measured at a rate of 1 hour for seven days in beginning in early September 2021, from 6 A.M to 6 P.M (13 h). As can be observed, almost all films have the same ratio of intensity of transmitted radiation to intensity of sunlight for all hours and days.

show abstract

“…Generally, the heat resistance of materials is improved by limiting the movement of molecular chains via two main approaches. The first approach involves the addition of inorganic materials, such as ZnO, 5,6 CuO, 7 SiO 2 , 8 multiwalled carbon nanotubes, 9,10 Al 2 O 3 , 11 TiO 2 , 12,13 and clay 14 to the PMMA matrix to obtain inorganic/organic nanomaterials. Although this process can improve heat resistance of PMMA, the transparency is reduced.…”

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Dong,

Mao,

Liang

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

It is challenging to endow poly(methyl methacrylate) (PMMA) with good dielectric properties and UV absorption capacity while simultaneously overcoming its poor heat resistance. Herein, we report for the first time a novel organic–inorganic hybrid (PMMA‐HBPSi) derived from methyl methacrylate (MMA) and hyperbranched polysiloxane (HBPSi) fabricated via γ‐radiation curing. The typical properties (thermal stability, optical characteristics, and dielectric properties) of the hybrids were systematically investigated and discussed. The results demonstrated that the incorporation of HBPSi into the PMMA resin not only increased the thermal resistance, dimensional stability, and dielectric properties but also remarkably reduced the UV transmittance. Specifically, in comparison with pure PMMA, the initial degradation temperature (Tdi) of PMMA‐HBPSi increased by 31°C, with no phase transition occurred in a temperature range of 60–230°C, thus illustrating a significant improvement in the glass‐transition temperature. Moreover, the thermal expansion coefficient decreased by 86.9% at temperatures exceeding 118°C. The UV transmittance of PMMA was also found to decrease by 80% at 295 nm after the introduction of HBPSi. These attractive features of PMMA‐HBPSi demonstrate that the new approach proposed here is suitable for developing high‐performance organic glasses for optical, aviation, and electronic applications.

show abstract

Synthesis, characterization and thermal properties of PMMA/CuO polymeric nanocomposites

Cited by 17 publications

References 44 publications

Graphene-Modified 3D Copper Foam Current Collector for Dendrite-Free Lithium Deposition

Graphene-Modified 3D Copper Foam Current Collector for Dendrite-Free Lithium Deposition

Analyses the Scope of Solar Radiation Transmittance and Physical Properties of Polymethyl Methacrylate/Zinc Oxide Nanocomposite Films

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Contact Info

Product

Resources

About