scholarly journals Effect of lithium fraction fLi on glass transition temperature Tg and ionic conductivity σ of lithium borosilicotitanate glasses

2020 ◽  
Vol 1495 ◽  
pp. 012037
Author(s):  
N S Satpute ◽  
A V Deshpande ◽  
V D Raut
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity

Physical Properties of Fluoride Glasses for Ionics

2005 ◽  
Vol 480-481 ◽  
pp. 299-304 ◽  
Author(s):  
Viera Trnovcová ◽  
R.M. Zakalyukin ◽  
N.I. Sorokin ◽  
D. Ležal ◽  
P.P. Fedorov ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Crystallization Temperature ◽  
Glass Composition ◽  
Point Of View ◽  
Fluoride Glasses ◽  
Glass Compositions

The ionic conductivity and permittivity of glasses based on ZrF4, BaF2, LaF3, AlF3 and NaF (ZBLAN) or PbF2, InF3, BaF2, AlF3 and LaF3 (PIBAL) are studied. The influence of the glass composition on the glass transition temperature (Tg) and on the crystallization temperature (Tx) is reported. For all ZBLAN glasses the temperature dependencies of the ionic conductivity are close one to another (s500 = 8(2)·10-6 S/cm) and their conduction activation enthalpies are equal to 0.82(1)eV. From the point of view of the ionic conductivity, the best glass compositions are the PIBAL50 (50 m/o PbF2) and PIB45 ( 45 m/o PbF2).

Gel polymer electrolyte based on the synthesized co-polymer of poly(methyl methacrylate-maleic anhydride)

Clay Minerals ◽  
2008 ◽  
Vol 43 (3) ◽  
pp. 405-413 ◽  
Author(s):  
Y. Huang ◽  
X. Y. Ma ◽  
G. Z. Liang ◽  
S. H. Wang
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Maleic Anhydride ◽  
Methyl Methacrylate ◽  
Polymer Matrix ◽  
Ion Source ◽  
Resonance Spectroscopy ◽  
Poly Methyl Methacrylate

AbstractIn this study, poly(methyl methacrylate-maleic anhydride) (P(MMA-MAh)) was synthesized in toluene from methyl methacrylate (MMA) and maleic anhydride (MAh) monomers via free radical polymerization, in the presence of 2,2′-Azo-bis-isobutyronitrile (AIBN), as initiator at 80ºC for 8 h. The molar ratio of monomers was found to be 1 MAh:8 MMA using hydrolysis and titration. The molecular weight of co-polymer was determined to be of the order of 104 (g/mol) by gel permeation chromatography. The co-polymer was characterized using Fourier transform infrared and nuclear magnetic resonance spectroscopy. Thermogravimetric analysis indicated the initial decomposition temperature was ~270ºC. Differential scanning calorimetry indicated that the glass transition temperature was near 126ºC.Rectorite modified with benzyldimethyldodecylammonium chloride (OREC) was used as an additive to modify gel polymer electrolytes (GPEs) which consisted of P(MMA-MAh) used as a polymer matrix, propylene carbonate (PC) as a plasticizer and LiClO4 as the lithium ion source. X-ray diffraction analysis indicates that OREC can exfoliate well in GPEs when the amount of clay is suitable. The temperature dependence of the ionic conductivity of the resulting GPEs agreed well with the VTF (Vogel-Tamman-Fulcher) relation. OREC doses of 5 phr resulted in the greatest ionic conductivity. This OREC addition considerably improved the plasticized retention levels. As a consequence of OREC occupying the free volume space in the polymer matrix of GPEs, the bulk resistance of the GPEs was reduced and the glass transition temperature (Tg) increased.

Glass transition temperature and ionic conductivity in Ag2O-Ga2O3-P2O5 glasses

1989 ◽  
Vol 8 (3) ◽  
pp. 267-270 ◽  
Author(s):  
P. Pernice ◽  
A. Aronne ◽  
F. Branda ◽  
A. Buri ◽  
A. Marotta
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity

Relationship between Ionic Conductivity, Glass Transition Temperature, and Dielectric Constant in Poly(vinyl ether) Lithium Electrolytes

2021 ◽  
pp. 1002-1007
Author(s):  
Jennifer Imbrogno ◽  
Kazuya Maruyama ◽  
Frederick Rivers ◽  
Jacob R. Baltzegar ◽  
Zidan Zhang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Vinyl Ether

scholarly journals STUDI KONDUKTIVITAS ELEKTROLIT POLIMER KITOSAN/PVA+KOH

2011 ◽  
Vol 1 (2) ◽  
pp. 13-17
Author(s):  
R.Putri ◽  
A.Maddu ◽  
Irzaman
Keyword(s):  
Thermal Analysis ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Polyvinyl Alcohol ◽  
Polymer Electrolyte ◽  
Potassium Hydroxide ◽  
Room Temperature ◽  
Casting Technique

The blend-based polymer electrolyte consisting of chitosan and polyvinyl alcohol (PVA) as host polymers and potassium hydroxide (KOH) as the complexing salt was studied. Polymerelectrolyte were obtained by the casting technique. An attempt was also made to investigate the effect of TiO2 concentration in the chitosan/PVA+KOH polymer electrolyte. The best ionic conductivity values of 1,105 x 10-2 S cm-1 at room temperature were obtained for the sample containing 35%wt of KOH and 1,210 x 10-2 S cm-1 for the sample containing 50% wt TiO2. The polymer electrolyte with good ionic conductivity properties were characterized by thermal analysis (DSC). The glass transition temperature about 75.30 °C for the optimum Chitosan/PVA+KOH

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