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首页> 外文期刊>RSC Advances >Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties
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Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties

机译：聚（丁烯己二酸丁二醇酯 - 对苯二甲酸酯）（PBAT）和立体杂波丁基酰基的共混物，具有改善的流变和力学性能

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摘要

Biodegradable blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide (sc-PLA) were prepared herein via a melt blending method at various sc-PLA loadings. Wide-angle X-ray diffraction and differential scanning calorimetry results verified that complete stereocomplex polylactide crystallites in the PBAT could be achieved. Scanning electron microscopy observation indicated that sc-PLA was dispersed in the PBAT matrix as spherical particles; the dispersed size of the sc-PLA did not display a pronounced increase once the content of sc-crystallites reached a critical gel point. As solid fillers, sc-PLA could reinforce the PBAT matrix in a relatively wider temperature region and accelerate the non-isothermal crystallization of PBAT. The properties of PBAT were greatly improved after blending with sc-PLA, particularly when a percolation network structure of spherical filler had formed in the blends. In addition, all the blends showed higher yield stresses and moduli than those of the neat PBAT but exhibited reduction in elongations in tensile mechanical tests. These results would be interesting to the industrial polymer materials community, and may be of significant use and importance for the wider practical application of PBAT.
机译：通过在各种SC-PLA载荷的各种SC-PLA载荷处，通过熔融共混方法制备本文制备聚（丁烯己二酸丁二醇酯）（PBAT）和立体络合物聚丙酯（SC-PLA）的可生物降解的共混物。广角X射线衍射和差示扫描量热法验证了可以实现PBAT中的完整立体络合物聚丙酯微晶。扫描电子显微镜观察表明SC-PLA分散在PBAT基质中作为球形颗粒;一旦SC晶体的含量达到临界凝胶点，SC-PLA的分散尺寸没有显示出明显的增加。作为固体填料，SC-PLA可以在相对较宽的温度区域中加强PBAT基质，并加速PBAT的非等温结晶。与SC-PLA混合后，PBAT的性质大大提高，特别是当在共混物中形成球形填料的渗透网络结构时。此外，所有共混物显示出比整齐PBAT的产屈服应力和模态更高，但表现出拉伸机械测试中的伸长率。这些结果对工业聚合物材料群落有趣，可能对PBAT更广泛的实际应用具有重要利用和重要性。

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  • 来源
    《RSC Advances》 |2020年第18期|共9页
  • 作者

    Zhao Hongwei; Liu Huan; Liu Yaqin; Yang Yong;

  • 作者单位

    Hunan Univ Sci &

    Technol Sch Mat Sci &

    Engn Xiangtan 411201 Hunan Peoples R China;

    Hunan Univ Sci &

    Technol Sch Mat Sci &

    Engn Xiangtan 411201 Hunan Peoples R China;

    Hunan Univ Sci &

    Technol Sch Mat Sci &

    Engn Xiangtan 411201 Hunan Peoples R China;

    Hainan Univ Coll Food Sci &

    Engn Haikou 570228 Hainan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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