Preparation and characterization of polymer nanocomposites based on PVDF/PVC doped with graphene nanoparticles
TLDR
In this article, a novel nanocomposites based on PVDF/PVC blend containing graphene oxide nanoparticles (GO) were prepare using sonicator and IR analysis revealed that the addition of GO prompts a crystal transformation of α-phase of PVDF.Abstract:
Novel nanocomposites based on PVDF/PVC blend containing graphene oxide nanoparticles (GO) were prepare using sonicator. IR analysis revealed that the addition of GO prompts a crystal transformation of α-phase of PVDF. The change of the structural before and after adding GO to PVDF/PVC were studied by X-ray diffraction. A decrease in activation energy gap from UV data was observed with increasing GO content, implying a variation of reactivity as a result of reaction extent. The variation of e ′ with frequency is nearly the same as that of e ″ . At higher frequencies, the decrease of both e ′ and e ″ becomes nearly constant. The dispersion at lower frequencies e ′ of e ′ polarization is of Maxwell–Wagner interfacial polarization but at higher frequencies, it levels off. The behavior of conductivity ( σ AC ) tends to acquire constant values approaching it DC values. The values of σ AC was increased after doped GO with exponential increase after the critical value of frequency. All nanocomposites behaved the same fashion revealing that a higher number of polarons were getting added to conducting pool in composites as graphene content was increased. Conduction mechanism appeared to be getting expedited with increasing frequency due to fact that increase in frequency enhances polaron hopping frequency.read more
Citations
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Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes.
Pavel Kaspar,Dinara Sobola,Klara Castkova,Alexandr Knápek,Daniel Burda,F.F. Orudzhev,Rashid Dallaev,Pavel Tofel,Tomáš Trčka,Lubomír Grmela,Zdeněk Hadaš +10 more
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Energy storage and loss capacity of graphene-reinforced poly(vinylidene fluoride) nanocomposites from electrical and dielectric properties perspective: A review
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TL;DR: In this article, the authors synthesize and investigate the optical spectroscopy of PVA/iron polymer nanocomposites and compare the energy gap values estimated from Tauc's formula and optical dielectric loss function.
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Optical properties of ZnO nanoparticles dispersed in PMMA/PVDF blend
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Enhancement the electrical conductivity of the synthesized polyvinylidene fluoride/polyvinyl chloride composite doped with palladium nanoparticles via laser ablation
TL;DR: In this article, a polymer nanocomposite film based on the blended polyvinylidene fluoride (PVDF) and Polyvinyl Chloride (PVC) and doped with different concentrations of palladium nanoparticles (PdNPs) were prepared by laser ablation technique.
References
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Improved Synthesis of Graphene Oxide
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TL;DR: An improved method for the preparation of graphene oxide (GO) is described, finding that excluding the NaNO(3), increasing the amount of KMnO(4), and performing the reaction in a 9:1 mixture of H(2)SO(4)/H(3)PO(4) improves the efficiency of the oxidation process.
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Atomic and Electronic Structure of Graphene-Oxide
K. Andre Mkhoyan,Alex W. Contryman,John Silcox,Derek Stewart,Goki Eda,Cecilia Mattevi,Steve Miller,Manish Chhowalla +7 more
TL;DR: The results of this detailed analysis reveal that the GO is rough with an average surface roughness of 0.6 nm and the structure is predominantly amorphous due to distortions from sp3 C-O bonds.