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Synthesis and Characterization of Novel ABA Triblock Copolymers from L-Lactide,Glycolide,and PEG

机译:L-丙交酯,乙交酯和PEG合成新型ABA三嵌段共聚物及其表征

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摘要

A series of novel triblock copolymers,consisting of a poly(ethylene glycol) center block joined by two blockds of random L-lactide/glycolide copolymers,are synthesized and their characteristics (spectral,thermal,and mechanical)determined.Polymer compositions and structures are assessed via ~1H-NMR and ~(13)C-NMR spectroscopies.DSC and stress-strain behavior studies demonstrate that these copolymers are generally more amorphous,more elastic,and tougher than are poly(L-lactides).
机译:合成了一系列新颖的三嵌段共聚物,该共聚物由聚乙二醇中心嵌段与两个嵌段的无规L-丙交酯/乙交酯共聚物连接而成,并确定了它们的特性(光谱,热和机械)。 DSC和应力-应变行为研究表明,这些共聚物通常比聚L-丙交酯更无定形,更具弹性和韧性。

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