Structural, optical, thermal and electrical studies on PVA/PVP blends filled with lithium bromide

Abdelrazek, E.M.; Elashmawi, I.S.; El‐Khodary, A.; Yassin, A. Y.

doi:10.1016/j.cap.2009.08.005

Cited by 250 publications

(97 citation statements)

References 20 publications

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“…A bending vibration at 1629 cm -1 [18] of hydroxyl group confirms the presence of water. The band corresponding to CH 2 asymmetric stretching vibration occurs at about 2950 cm -1 and this band become broader after adding silver or gold colloids [19]. The band at 1446 cm -1 is assigned to CH 2 scissoring vibrations and its intensity increase with adding silver or gold.…”

Section: Expermental Fourier Transform Infrared Analysismentioning

confidence: 98%

Combined DFT/FTIR structural studies of monodispersed PVP/Gold and silver nano particles

Abdelghany

Mekhail

Abdelrazek

et al. 2015

Journal of Alloys and Compounds

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Section: Expermental Fourier Transform Infrared Analysismentioning

confidence: 98%

Combined DFT/FTIR structural studies of monodispersed PVP/Gold and silver nano particles

Abdelghany

Mekhail

Abdelrazek

et al. 2015

Journal of Alloys and Compounds

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“…It is well known that when PVA/PVP films are soaked both in comparatively low concentrated iodine and in high concentrated of iodine, it penetrates into PVA/PVP crystals to form co-crystals with PVA/PVP, whose structure has been proposed on the basis of X-ray diffraction [5]. Iodine chloride has been used as a dopant in many other polymers like polyaniline and polyacetylene.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and dielectric study of iodine chloride doped PVA/PVP blend

Abdelrazek

Ragab

2014

Indian J Phys

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Optical and dielectric properties of Poly (vinyl alcohol)/ Poly (vinyl pyrrolidone) blend and blend loaded with different concentrations of ICl 2 were studied. UV-Vis spectral analysis before and after c-irradiation suggested that the addition of iodine led to complete complexation between ICl 2 and polymer blend were observed. The values of optical parameters k o , S o and n ? were determined from by reflection and transmission spectra in the range of 200-800 nm. The refractive index was found to change non-monotonically with the increase of iodine. Infrared analysis revealed the formation of new species between blend and iodine content. There were some changes in IR absorption bands, position and their intensities. The AC conductivity (r ac ) behavior of all prepared films was investigated in the frequency range 42 Hz-5 MHz and under different isothermal stabilization in the temperature range 300-400 K. The dependence of the imaginary modulus (M 00 ) on frequency at lower frequencies was estimated. The increasing values of M 00 may be attributed to the bulk effect with the increase in temperature.

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“…PVP is noncytotoxic in nature and biocompatible and has found many applications in biomedical applications like blood plasma substitute [15]. Blends of PVA-PVP have been reported as materials for biomedical and technological applications [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite films dispersed with silica nanoparticles extracted from earthworm humus

Chatterjee

Gupta

2012

Journal of Non-Crystalline Solids

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Structural, optical, thermal and electrical studies on PVA/PVP blends filled with lithium bromide

Cited by 250 publications

References 20 publications

Combined DFT/FTIR structural studies of monodispersed PVP/Gold and silver nano particles

Combined DFT/FTIR structural studies of monodispersed PVP/Gold and silver nano particles

Spectroscopic and dielectric study of iodine chloride doped PVA/PVP blend

Nanocomposite films dispersed with silica nanoparticles extracted from earthworm humus

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