POLYURETHANE TELECHELIC CATIONOMERS CONTAINING END FUNCTIONAL 4-VINYLPYRIDINIUM MOIETIES

Telechelic polyurethane cationomers containing end functional 4-vinylp yridinium moieties have been synthesized by the reaction of 4-vinylpyr idine on 2-bromoethanol terminated polyurethane. The polyurethanes wer e characterized by FTIR, FTNMR and DSC studies. The introduction of io nic groups into the polyurethane shifts the T-g to lower temperatures, the shift in T-g further increases with increase in ionic groups.