evaluation the influence of polyether/polyester mixed soft segments on hydrogen bonding and micro-phase separation of thermoplastic polyurethanes

Thermoplastic polyurethanes (tpus) with two kinds of different polyols as soft segment have been synthesized. the effect of mixed soft segments including ptmeg (poly tetramethylene ether glycol) and pcl (polycaprolactone) on hydrogen bonding and micro-phase separation of synthesis polyurethane has been investigated. successful synthesizing of the tpus and micro-phase separation of both samples were evaluated by atr-ftir and deconvolution of the peaks. the results indicated that sample with two kinds of different polyols in the composition compared to the samples with only one kind of soft segment showed higher micro-phase separation and more concentrating and localization of hard segment in the hard domain regions.