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首页> 外文期刊>Journal of Applied Polymer Science >High-viscosity polylactide prepared by in situ reaction of carboxyl-ended polyester and solid epoxy
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High-viscosity polylactide prepared by in situ reaction of carboxyl-ended polyester and solid epoxy

机译：羧基端聚酯与固体环氧树脂原位反应制备的高粘度聚丙交酯

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摘要

To extend the potential applications of polylactide (PLA) in film blowing, foaming, thermal molding, and so on, the high-viscosity PLA composites with various compositions of carboxyl-ended polyester (CP) and solid epoxy (SE) have been successfully prepared by an in situ reaction blending process. Their rheological properties, crystallization behaviors, tensile properties, and morphologies have been investigated in detail. The results show that the complex viscosity η*, G', and G'' at low-frequency region and the tensile strength of PLA composites are obviously improved with the addition of CP/SE, but the nonisothermal crystallization of PLA component is hindered. SEM reveals that some microphase separations existed in the as-prepared composites.
机译：为了扩大聚丙交酯（PLA）在吹膜，发泡，热成型等方面的潜在应用，已成功制备了具有各种羧基端聚酯（CP）和固体环氧树脂（SE）的高粘度PLA复合材料通过原位反应混合过程。他们的流变性能，结晶行为，拉伸性能和形态已被详细研究。结果表明，加入CP / SE可以明显改善低频区域的复数粘度η*，G'和G''，并提高PLA复合材料的拉伸强度，但阻碍了PLA组分的非等温结晶。扫描电镜显示，制备的复合材料中存在一些微相分离。

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