INFLUENCE OF LICLO4 ON THE PROPERTIES OF POLYETHER NETWORKS - SPECIFIC VOLUME AND GLASS-TRANSITION TEMPERATURE

A series of networks based on different polyether chains (PEO homopolymer, block and graft copolymers) joined by different urethane cross-links were prepared. Their specific volume and T//g were determined in the absence and in the presence of LiClO//4 as a function of various structural parameters and of salt concentration. Quantitative correlations were obtained and interpreted on the basis of specific interactions between the ether groups and the ionized salt. Chain partitioning and physical cross-linking occurred as a consequence of these associations.