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首页> 外文期刊>RSC Advances >Structural design of polyurethane/poly( butylene succinate)/polycaprolactone compounds via a multilayer- assembled strategy: achieving tunable triple-shape memory performances
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Structural design of polyurethane/poly( butylene succinate)/polycaprolactone compounds via a multilayer- assembled strategy: achieving tunable triple-shape memory performances

机译：聚氨酯/聚（丁烯琥珀酸酯）/聚己内酯化合物通过多层组装策略的结构设计：实现可调三重记忆性能

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摘要

Shape memory polymeric materials composed of thermoplastic polyurethane (TPU), poly(butylene succinate) (PBS), and polycaprolactone (PCL) were prepared through layer-multiplying co-extrusion of blends. With the two well-separated melting transitions respectively from PCL and PBS, the multicomponent compounds realized triple-shape memory effect. By tailoring the structure of the individual layer, the multilayer systems with designable phase morphology were fabricated, which developed tunable shape memory performances. Particularly, the multi-continuous structure containing alternating layers of TPU and the co-continuous PBS/PCL blend presented the optimal shape fixity and recovery ratios, whose minimum value can reach 84%. It was revealed that the high phase continuity along the deformation direction and the strong interfacial shearing effect promoted the ability to fix the temporary shapes and recover them to the permanent state. In addition, the multi-continuous structure maximized the synergy of the components in mechanical properties, resulting in an excellent balance of tensile strength and ductility. The present strategy for morphology control of multicomponent structures provides a promising method to fabricate outstanding triple-shape memory polymers with optimal mechanical properties.
机译：通过层倍增的共混物，制备由热塑性聚氨酯（TPU），聚（丁二酸酯）（PBS）和聚己内酯（PCL）组成的形状记忆聚合物材料。通过PCL和PBS分别与PCL和PBS的两个良好分离的熔化转变，多组分化合物实现了三重形状记忆效应。通过剪裁各个层的结构，制造具有可设计相位形态的多层系统，其开发了可调形状记忆性能。特别地，含有TPU的交替层的多连续结构和连贯的PBS / PCL混合物呈现出最佳形状固定性和回收率，其最小值可达到84％。据透露，沿变形方向的高相连续性和强的界面剪切效果促进了固定临时形状并将其恢复到永久状态的能力。此外，多连续结构最大化了机械性能中的组件的协同作用，导致抗拉强度和延展性的优异平衡。多组分结构的形态控制的本发明策略提供了具有最佳机械性能的优异三重记忆聚合物的有希望的方法。

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  • 来源
    《RSC Advances》 |2018年第74期|共9页
  • 作者

    Zheng Yu; Ji Xiaoying; Wang Qingwen; Shen Jiabin; Guo Shaoyun;

  • 作者单位

    Sichuan Univ Polymer Res Inst State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Polymer Res Inst State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Polymer Res Inst State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Polymer Res Inst State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Polymer Res Inst State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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