Salt-Concentration Dependence of the Glass Transition Temperature in PEO–NaI and PEO–LiTFSI Polymer Electrolytes

2013 ◽  
Vol 46 (21) ◽  
pp. 8580-8588 ◽  
Author(s):  
Nicolaas A. Stolwijk ◽  
Christian Heddier ◽  
Manuel Reschke ◽  
Manfred Wiencierz ◽  
Joachim Bokeloh ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Concentration Dependence ◽  
Salt Concentration ◽  
Polymer Electrolytes

scholarly journals Polymer Electrolytes with Exclusively Cationic Conductivity

1988 ◽  
Vol 135 ◽  
Author(s):  
H. Liu ◽  
Y. Okamoto ◽  
T. Skotheim ◽  
Y. S. Pak ◽  
S. G. Greenbaum ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Hydrostatic Pressure ◽  
Magnetic Resonance ◽  
Polymer Electrolytes ◽  
Ion Pair ◽  
Pair Formation ◽  
Motional Narrowing

AbstractThe synthesis of exclusively cation conducting polymer electrolytes based on a nylon-l backbone, ethylene-oxide side chains, and attached dibutyl phenolate anions is described. The tendency for ion pair formation appears to be reduced as the conductivity of the sodium-containing compound reaches −2 × 10−6 S-cm−1 at 50°C. 23Na nuclear magnetic resonance measurements demonstrate: i) motional narrowing of the mobile Na+ resonance above the glass transition temperature; ii) mobile Na+ concentrations of ∼75% at 40°C; iii) insensitivity of the linewidth to applied hydrostatic pressure up to 2 kbar. Similaries between these findings, and those in “conventional” polymer-salt electrolytes are discussed.

scholarly journals Glass Transition Temperature and Ion Binding Determine Conductivity and Lithium–Ion Transport in Polymer Electrolytes

2020 ◽  
pp. 104-109
Author(s):  
Nicole S. Schauser ◽  
Andrei Nikolaev ◽  
Peter M. Richardson ◽  
Shuyi Xie ◽  
Keith Johnson ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ion Transport ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Ion Binding

The Dependence of the Setting Temperature on the Concentration of Plasticizer

2014 ◽  
Vol 584-586 ◽  
pp. 1714-1717 ◽  
Author(s):  
Tatyana Matseevich ◽  
Marina Popova ◽  
Valerii Kondrashchenko ◽  
Andrey Askadskii
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Theoretical Analysis ◽  
Concentration Dependence ◽  
Calculated Data ◽  
Analytical Expression ◽  
Chemical Structures ◽  
Polar Groups ◽  
Good Agreement

The theoretical analysis regarding the influence of the chemical structures both of polymer and plasticizer on the glass transition temperature has been produced. The analysis is made based on the Askadskii equation allowing Tg calculation of polymers. The phenomenon of blocking polar groups of the polymer by the molecules of plasticizer is taken into consideration. Also the effect of dilution was considered. The analytical expression for concentration dependence of the glass transition temperature is obtained, and a good agreement between the experimental and calculated data is provided.

The temperature and concentration dependence of viscosity and the concentration dependence of glass transition temperature for the system calcium nitrate-potassium nitrate-water

1981 ◽  
Vol 46 (9) ◽  
pp. 2149-2157 ◽  
Author(s):  
Mojmír Skokánek ◽  
Jarmila Malá ◽  
Ivo Sláma
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Concentration Dependence ◽  
Mole Fraction ◽  
Potassium Salt ◽  
Calcium Nitrate ◽  
Potassium Nitrate ◽  
Empirical Equations ◽  
Temperature Range

The temperature and concentration dependence of viscosity of the system calcium nitrate-potassium nitrate-water was studied in the temperature range -20 to +75 °C for concentrations given by ionic fractions of the potassium salt of 0.1, 0.2, 0.3, 0.4, and 0.5. The mole fraction of the salts was within the range 0.047 to 0.238. The temperature and concentration dependence of viscosity has been correlated with empirical equations. An equation describing the temperature and concentration dependence of viscosity has been proposed on the basis of the variation of glass transition temperature with concentration.

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