Conductivity measurement of poly(vinyl borate) and its lithium derivative in solid state

Poly(vinyl borate), PVBO and lithium derivative of PVBO can be prepared by homogeneous esterification of PVA with boric acid in non-aqueous medium in the presence of a catalyst C2H5ONO2·DMSO. The compounds were characterised by IR and 1H NMR spectra. Conductivities were determined from 30 to 90 °C in solid state. The compounds so formed showed ionic conductivity and their conductivities were dependent on frequencies used. The addition of Li+ ion increases the ionic conductivity of PVBO dramatically. The total ionic transport number and activation energy of the polymers were also determined.