Microphase separation in amorphous polyethers complexed with lithium perchlorate, sodium perchlorate and sodium iodide

Solubility and T g data obtained for amorphous mixtures of LiClO 4 with poly(propylene oxide) (PPO) and poly(ethylene oxide) (PEO), both of molecular weights 4×10 3 , confirm that cation-oxygen binding energy is of lower magnitude in PPO than in PEO. In agreement with anterior data reported by Moacanin and Cuddihy for a high molecular weight PPO, below a critical concentration, which corresponds to a molar ratio O/Li=10 (O=ether orygen), a liquid-liquid microphase separation takes place in the mixtures of the PPO-LiClO 4 system