Abstract
AbstractSegmented poly(ester‐urethanes) containing hard and soft segments, were obtained from aromatic diisocyanates with thiodiglycol or diethylene glycol as chain extenders, and poly(ethylene glycol)adipate usig a multistep polyaddition process. Transition temperatures by differential scanning calorimetry and thermo‐optical analysis were employed to characterize polyurethane materials. Changes in the conformation of these polyurethanes were analyzed also, by viscometer measurements in N,N‐dimethyl‐formamide. The obtained data revealed that the thermal curves are influenced by the soft and hard segment structures in the temperature range studied.
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