Synthesis and physicochemical properties of new (bio)degradable poly(ester-urethane)s containing polylactide and poly[(1,4-butylene terephthalate)-co-(1,4-butylene adipate)] segments

Add time:08/07/2019    Source:sciencedirect.com

(Bio)degradable poly(ester-urethane)s containing polylactide (PLA) and poly[(1,4-butylene terephthalate)-co-(1,4-butylene adipate)] (BTA) segments in the main chain were synthesized and their properties were examined. Novel poly(ester-urethane)s were obtained from isophorone diisocyanate (IPDI), synthetic PLA-diol and/or synthetic BTA-diol oligomers in a two-step process. PLA-diol and BTA-diol oligomers were received via glycolysis of their respective polymers: PLA and BTA. Butanediol (BD) was used as a polymer chain extender.The synthesized poly(ester-urethane)s were characterized by DSC, NMR, GPC, FTIR and X-ray methods. The poly(ester-urethane)s that were examined had a single glass transition temperature (Tg), which pointed to a one-phase system. The biodegradability of the received poly(ester-urethane)s was examined under industrial composting conditions. The results prove the possibility of synthesizing new perspective application materials, surrendering (bio)degradation in the environment.

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