Synthesis by Different Methods and Characterization of Hyperbranched Polyurethane

摘要

Hyperbranched polyurethane (HBPU) samples are synthesized by two different methods from isophorone diisocyanate, 1,4-dihydroxybutane and diethanolamine generation by generation. And two series of samples are marked HBPU 1s and HBPU2s. FTIR measurement is used to characterize the structure of the samples. DSC and TG measure the thermal properties of the samples. The results indicate that the hyperbranched structure of the polyurethane is consistent with theoretical design through controlling the feed ratio. The intensity of hydrogen-bonded interaction in HBPUls is stronger than that in HBPU2s. Two series samples have same thermal stability.