DBS investigation on films of cobalt chloride doped PVA-PVP blend

Hammannavar, Preeti B.; Baraker, Basavarajeshwari M.; Bhajantri, R. F.; Ravindrachary, V.; Lobo, Blaise

doi:10.1088/1742-6596/618/1/012034

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…The plain blend film is shown to have an absorption peak at 210 nm. Due to the conjugated C═C and C═O groups, the characteristic absorption peak belongs to the blend electronic transition of π → π* 45 . Also obvious in Figure 4 is a shift in absorption bands as the concentration of CNTs/TiO 2 increases, with the band edges shifting toward the longer wavelength area with various absorption intensities, indicating the creation of inter‐/intramolecular hydrogen bonding between the dopant and the adjacent OH, COO, and COONa groups of the polymer blend.…”

Section: Resultsmentioning

confidence: 99%

“…π*. 45 Also obvious in Figure 4 is a shift in absorption bands as the concentration of CNTs/TiO 2 increases, with the band edges shifting toward the longer wavelength area with various absorption intensities, indicating the creation of inter-/intramolecular hydrogen bonding between the dopant and the adjacent OH, COO, and COONa groups of the polymer blend.…”

Section: Optical Propertiesmentioning

confidence: 92%

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Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Alghamdi

Rajeh

2021

Intl J of Energy Research

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Summary In this system, the solvent casting technique was used to prepare polymer nanocomposites from the multiwalled carbon nanotubes (MWCNTs)/TiO2 nanoparticles (as nanofiller)‐doped polyvinyl alcohol/sodium alginate (PVA/SA) blend. The modification in the structure of the nanocomposites is proved by the studies of X‐ray diffraction (XRD) and Fourier transform infrared (FTIR) spectra. The transmission electron microscopy (TEM) analysis evidenced that the MWCNTs/TiO2 nanoparticles were incorporated in the PVA/SA polymer. The optical energy gap of the polymer blend is reduced after incorporating the MWCNTs/TiO2. The thermogravimetric analysis (TGA) has demonstrated the nanocomposites' excellent thermal stability compared to pure blend, as well as its enhancement with the addition of MWCNTs/TiO2 nanoparticles. The AC conductivity and dielectric properties of the nanocomposite enhanced as compared to pure PVA/SA. Also, the electrical properties were higher due to the loading of MWCNTs/TiO2 nanoparticles. The increase in elongation at the break and higher tensile strength of nanocomposites compared to pure polymer blends suggested that MWCNTs/TiO2 nanoparticles in the polymer matrix provided greater reinforcement. Thus, it was generally concluded that the polymer nanocomposite is better than the pure blend due to its superior dielectric constant, thermal, optical, and mechanical properties, which make them useful in the manufacture of nanoelectronic devices of high energy storage.

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Section: Resultsmentioning

confidence: 99%

Section: Optical Propertiesmentioning

confidence: 92%

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Alghamdi

Rajeh

2021

Intl J of Energy Research

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“…PVP has excellent complex formation ability and good mechanical properties. The study of PVA‐PVP blend films which have been doped with inorganic salts is a matter of contemporary interest …”

Section: Introductionmentioning

confidence: 99%

“…The study of PVA-PVP blend films which have been doped with inorganic salts is a matter of contemporary interest. [13][14][15][16][17][18][19][20] Energy Dispersive X-ray Fluorescence spectrometry (EDXRF) is an elemental analysis technique, [21,22] used to identify the elements present in a sample (both qualitatively and quantitatively) by counting the number of photons of each energy emitted from the sample, when an individual atom of the sample is ionized by an external source, resulting in emission of x-ray photons of a characteristic energy or wavelength. Cobalt-57 (Co 57 ) radio-active source is used as the source of incident, low energy gamma radiation.…”

Section: Introductionmentioning

confidence: 99%

Study of Lead Nitrate Doped PVA/PVP Blend Films using EDXRF and Complementary Techniques

Hammannavar

Lobo

2017

Macromolecular Symposia

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Polyvinyl alcohol (PVA) − polyvinyl pyrrolidone (PVP) blend solutions were doped with different amounts of lead nitrate (Pb(NO3)2), in the doping range varying from 2.7 wt% up to 50.5 wt%. In this paper, the study of these films using Energy Dispersive X‐ray Fluorescence (EDXRF) technique in 2 π geometrical configuration is explained. In order to study K shell (Kαβ) X‐rays from the prepared films, cobalt‐57 radio‐isotope and thallium doped sodium iodide [NaI(Tl)] scintillation gamma/ x‐ray detector system with 1k MCA are used. The experiment was complemented by Scanning Electron Microscopy (SEM) coupled with Energy Dispersive X‐ray Spectroscopy (EDS). The SEM images revealed that the filler (Pb(NO3)2) causes significant micro‐structural changes in doped PVA/PVP blend films, revealing phase separation of the material into a polymer rich region and a dopant rich region at doping levels beyond 12.1 wt%. In addition to SEM, the EDXRF study is complemented by X‐Ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC) scans on the Pb (NO3)2 doped PVA/PVP blend films.

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Nanocomposite of PVA/PVP blend incorporated by copper oxide nanoparticles via nanosecond laser ablation for antibacterial activity enhancement

et al. 2021

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DBS investigation on films of cobalt chloride doped PVA-PVP blend

Cited by 7 publications

References 8 publications

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Study of Lead Nitrate Doped PVA/PVP Blend Films using EDXRF and Complementary Techniques

Nanocomposite of PVA/PVP blend incorporated by copper oxide nanoparticles via nanosecond laser ablation for antibacterial activity enhancement

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