Microstructural studies on BaCl2 doped poly(vinyl alcohol)

Bhajantri, R. F.; Ravindrachary, V.; Harisha, A.; Crasta, Vincent; Nayak, Suresh P.; Poojary, Boja

doi:10.1016/j.polymer.2006.03.054

Cited by 211 publications

(126 citation statements)

References 15 publications

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“…Ã transition. 8 The second weak peak at 282 nm also shifting towards lower wavelength and assigned to aggregated polymer chains, but the third peak at 305 nm is shifting toward higher wavelength, which is assigned to ! Ã transitions, due to formation of charge-transfer transitions via inter and intra molecular hydrogen bonding between Li þ ions with OH/NH groups of PVA/CS blend.…”

Section: Uv-vis Studiesmentioning

confidence: 98%

Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

et al. 2014

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This paper focuses on the dielectric constant (" 0 ), dielectric loss factor (" 00 ) and frequency dependent conductivity ( ac ) properties of newly prepared poly(vinylalcohol) (PVA) chitosan (CS) composite films incorporated with different concentrations of LiClO 4 . The composite films were prepared using solution casting technique. The complexation between salt and polymer host is confirmed by FT Raman and UV-Vis studies. The sample containing 20 wt.% LiClO 4 exhibits a highest ionic conductivity of 3 Â 10 À6 S/cm at room temperature. The dielectric properties of the composites follow non-Debye behavior.

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Section: Uv-vis Studiesmentioning

confidence: 98%

Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

et al. 2014

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“…The absorption band at 280 nm and a shoulder at 330 nm are also in confirmation with our earlier paper and these bands can be attributed to p-p* transitions due to carbonyl groups remaining in the polymer matrix. PVA does not have any absorption bands beyond 330 nm 3,19 . Metal nanoparticles show surface plasmon resonance peak (SPR) and the position of the peak depends on the metal particles, its size and shape.…”

Section: Uv-vis Spectroscopic Studymentioning

confidence: 99%

Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique

Sachdev

Banerjee

Mukherjee

2014

DSJ

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In this paper, we report the embedment of Cobalt (Co) nanoparticles by ion beam sputtering (IBS) in poly(vinyl alcohol) (PVA) substrate to prepare nanocomposite film. The Co film of 5 nm was deposited on PVA by IBS technique. Formation of nanocrystalline Co with hcp phase is revealed in GIXRD pattern of the film which also indicates that there is no change in the crystalline structure of PVA even after sputtering of the metallic nanoparticles. The average particle size of Co nanoparticles as evaluated using Scherer formula is found to be about 2 nm. UVVis absorption spectrum of the film showed SPR peaks of Co metal in their nano size level embedded in the PVA matrix system. XPS study confirms the metallic nature of Co MOKE studies show that the nanocomposite film is ferromagnetic with Hc ‫||‬ of. 42.8 Oe.

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“…This mechanism can be calculated by Impedance spectroscopy. The conductivity mechanism greatly depends upon the ions mobility concentration 27 .Conductivities of the film at room temperatures were calculated using the formula σ=L/Rb A, where L is the thickness of the sample and A is the electrode area. The bulk resistance (Rb) of polymer electrolyte for all samples was calculated from the interception of the semi-circular arc on the real impedance (Z') axis.…”

Section: Ac Conductivity Of Pan+ Sodium Fluoride (Naf)mentioning

confidence: 99%

Ac Conductivity and Thermal Studies of Pan-Nafdoped Gel Polymer Electrolytes for Solid State Battery Applications

2017

Rasayan J Chem

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Thin film membranes of poly acrylonitrile (PAN) doped with sodium Fluoride (NaF) was prepared by solution casting technique. The Gel polymer Electrolyte films exhibiting an average thickness of 142 µm. The films were prepared with different (wt %) ratios. The structural formations were analyzed by X-Ray Diffraction method (XRD).The Conductivity Studies (AC) and thermal conductivity studies (DSC) of the different ratios of gel polymer electrolyte composites were studied. The AC conductivity studies were determined from the impedance data and thermal conductivity studies were measured using the transient electric pulse method. The AC Conductivity increases with increasing temperature and NaF Concentration. The formed fluoride complexes also contribute in increasing the AC quantities. The DSC measurements showed a decrease in the degree of crystallinity and increase of amorphous regions with increasing concentration of salt NaF. The sample containing 70PAN:30NaF exhibited the maximum conductivity of 1.82x10 -4 S cm -1 at room temperature (303K) and 2.96x10 -3 S cm -1 at 373K.

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Microstructural studies on BaCl2 doped poly(vinyl alcohol)

Cited by 211 publications

References 15 publications

Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique

Ac Conductivity and Thermal Studies of Pan-Nafdoped Gel Polymer Electrolytes for Solid State Battery Applications

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Microstructural studies on BaCl2 doped poly(vinyl alcohol)

Cited by 211 publications

References 15 publications

Ionic conductivity and dielectric studies of LiClO4 doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

Ionic conductivity and dielectric studies of LiClO4 doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique

Ac Conductivity and Thermal Studies of Pan-Nafdoped Gel Polymer Electrolytes for Solid State Battery Applications

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Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

Ionic conductivity and dielectric studies of LiClO₄ doped poly(vinylalcohol)(PVA)/chitosan(CS) composites