Conductivity in Poly(Ethylene Oxide) Complexed with Mixed Alkali Metal Salts

1994 ◽  
Vol 369 ◽  
Author(s):  
Byoung-Koo Choi ◽  
Young–Wa Kim
Keyword(s):  
Transition Temperature ◽  
Ethylene Oxide ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Positive Deviation ◽  
Anion Effect ◽  
Mixed Alkali ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Conductivity Behavior

AbstractConductivity has been measured for mixed alkali systems of LixNa1-xClO4 (PEO)n with n = 6, 16 and 40, and a mixed anion system of LiClxI1−x(PEO)16 complexes with varying concentrations of x. In the LixNa1−xClO4 (PEO)n complexes, it shows no unusual conductivity behavior. In the LiClxI1−x(PEO)16 complexes, the conductivity shows positive deviation from additivity in the mixed-anion region and the mixed-anion effect is also observed in the semicrystalline-toamorphous transition temperature.

Effect of pressure on conductivity in poly(ethylene oxide) complexed with alkali metal salts

1983 ◽  
Vol 9-10 ◽  
pp. 1139-1145 ◽  
Author(s):  
J.J Fontanella ◽  
M.C Wintersgill ◽  
J.P Calame ◽  
F.P Pursel ◽  
D.R Figueroa ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Ethylene Oxide ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Effect Of Pressure ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Microscopic investigation of ionic conductivity in alkali metal salts-poly(ethylene oxide) adducts

1983 ◽  
Vol 11 (1) ◽  
pp. 91-95 ◽  
Author(s):  
C. Berthier ◽  
W. Gorecki ◽  
M. Minier ◽  
M.B. Armand ◽  
J.M. Chabagno ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Alkali Metal ◽  
Ethylene Oxide ◽  
Microscopic Investigation ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Cluster–Micelle Transition of a Thermo- and Photoresponsive ABC Triblock Copolymer in an Ionic Liquid

2019 ◽  
Vol 72 (2) ◽  
pp. 155
Author(s):  
Aya Saruwatari ◽  
Kei Hashimoto ◽  
Ryota Tamate ◽  
Ryoji Usui ◽  
Hisashi Kokubo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transition Temperature ◽  
Ethylene Oxide ◽  
Uv Irradiation ◽  
Low Temperatures ◽  
Triblock Copolymer ◽  
Abc Triblock Copolymer ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Azobenzene Groups

We report the photocontrollable micelle–cluster transition of an ABC-type triblock copolymer in an ionic liquid (IL). Polystyrene-b-poly(ethylene oxide)-b-poly(4-phenylazobenzyl acrylamide-r-N-isopropylacrylamide) (PSt-b-PEO-b-P(AzoBnAm-r-NIPAm)) was synthesised, where PSt is IL-phobic, PEO is IL-philic, and P(AzoBnAm-r-NIPAm) is photo- and thermoresponsive in the IL. At high temperatures, the triblock copolymer forms micelles with PSt cores; furthermore, at low temperatures, micelles self-assemble into clusters induced by the aggregation of P(AzoBnAm-r-NIPAm). Under UV irradiation, the micelles form clusters at lower temperatures than that in the dark because of the change in the solubility of P(AzoBnAm-r-NIPAm) induced by photoisomerisation of the azobenzene groups, indicating that this triblock copolymer has a photocontrollable micelle–cluster transition temperature.

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