Fabrication and characterization of polymer blends consisting of cationic polyallylamine and anionic polyvinyl alcohol

Materials Today: Proceedings

et al. 2016

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Section: Xrd Studiesmentioning

confidence: 98%

Influence of Cerium Oxide (CeO2) Nanoparticles on the Structural, Morphological, Mechanical and Dielectric Properties of PVA/PPy Blend Nanocomposites

Mohanapriya

Materials Today: Proceedings

et al. 2016

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“…Among them, polymer blending is very useful and convenient method to develop new materials with desirable electrical conductivity and mechanical stability [20]. The main advantages of polymer blend systems are the easy preparations and the control of physical properties which depends on their miscibility and can be achieved simply by changing the blend compositions [21,22].…”

Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy, ionic conductivity and dielectric studies of new Li+ ion conducting polymer blend electrolytes based on biodegradable polymers for solid state battery applications

J Mater Sci: Mater Electron

Polu³

et al. 2016

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New solid polymer blend electrolyte films based on biodegradable polymer blend comprising of polyvinyl alcohol (PVA) and poly (N-vinyl pyrrolidone) (PVP) doped with different wt% of lithium carbonate (Li 2 CO 3 ) salt have been prepared by solution casting method. The resulting PVA/PVP/Li 2 CO 3 polymer blend electrolyte films have been characterized by various analytical techniques such as FTIR, UV-vis, XRD, TGA, polarized optical microscopy and scanning electron microscopy. The FTIR and XRD analysis confirmed the complex formation between PVA/ PVP blend and Li 2 CO 3 salt. The ionic conductivity and the dielectric properties of PVA/PVP/Li 2 CO 3 polymer blend electrolyte films were investigated using an impedance spectroscopy. It was observed that the ionic conductivity of PVA/PVP/Li 2 CO 3 electrolyte system increases as a function of Li 2 CO 3 concentration. The highest ionic conductivity was found to be 1.15 9 10 -5 S cm -1 for polymer blend electrolyte with 20 wt% Li 2 CO 3 content. On the other hand, the dielectric results revealed the non-Debye type of behaviour. The dielectric constant values indicate a strong dielectric dispersion in the studied frequency range which increases as the Li 2 CO 3 content increases. The dielectric constant as high as 1200 (e = 1201.57, 50 Hz, 150°C) and the dielectric loss well below 4 (tan d = 3.94, 50 Hz, 150°C) were obtained for polymer blend electrolytes with 25 wt% Li 2 CO 3 salt. Thus, the results obtained in the present study suggest that the PVA/PVP/ Li 2 CO 3 polymer blend electrolyte system seems to be a promising candidate for solid state battery applications.

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“…The corresponding bending and wagging of CH 2 vibrations were observed at 1438 and 1378 cm -1 respectively. The band at 1247 cm -1 can be assigned to C-H wagging [8] . Figure 3 …”

Section: Ftir Spectroscopymentioning

confidence: 99%

“…The decrease in crystallinity of PVA/ K 2 CrO 4 films can be due to decreasing in intermolecular hydrogen bonding in PVA or most probably due to the entanglement of PVA and K 2 CrO 4 chains [8] .…”

Section: X-ray Diffractionmentioning

confidence: 99%

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Influence of K₂CrO₄Doping on the Structural, Optical and Dielectric Properties of Polyvinyl Alcohol/K₂CrO₄Composite Films

Polymer-Plastics Technology and Engineering

et al. 2015

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