| abstract |
In the ABA triple block polymers described, block A, which is rigid, has a transition temperature distant from its rigid phase greater than 70 ° C., block B is completely or partially ionic, elastomeric or amorphous coordinator and the ratio of the length of block B over the length of block A is greater than 1. When block B is grouped into a complex with an ionic salt, said polymers act as polymer electrolytes which can be used in cells, etc. The preferred polymers are polymers in which the sites HC = CH located in the polybutadiene segments of a polystyrene-polybutadiene-polystyrene polymer are replaced by -CH2CH-X- (CH2CH2O) mR, where X represents a bond and R represents alkyl. A preferred salt is LiCF3SO3. |