ISSN:
0959-8103
Keywords:
polyelectrolytes
;
single-ion conductor
;
UV-polymerization
;
crosslinked copolymer
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A series of crosslinked copolymers of poly(ethylene glycol-co-2,4-tolyl diisocyanate-co-(alkali-metal methacrylates)) were prepared by copolymerization of polyurethane oligomer with alkali-metal methacrylate. Cast films of these copolymers obtained by UV-crosslinked polymerization are completely amorphous and have a relatively low Tg. The films provide good mechanical properties and high ionic conductivity without additional solvent or inorganic salts. DC ionic conductivity of the films at room temperature is stable over time indicating that the copolymer is a cationic single-ion conductor. AC conductivity of these films depends mainly on the ionic radius, segmental motion of the polymer chains and local environment of the ions in the polymer matrix.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
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