Triple-Shape Polymeric Composites (TSPCs)
Triple-Shape Polymeric Composites (TSPCs)
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DOI：
10.1002/adfm.201000052
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发表时间：
2010-08-23
影响因子：
19
通讯作者：
Mather, Patrick T.
中科院分区：
文献类型：
--
作者：
Luo, Xiaofan;Mather, Patrick T.
在本文中，三重形状聚合物复合材料（TSPC）的制造和表征，不同于传统的形状记忆聚合物（SMP），能够固定两个临时形状和恢复顺序从第一个临时形状（形状1）到第二个临时形状（形状2），并最终到永久形状（形状3）加热后，报告。这在技术上通过将低T（m）半结晶聚合物的非织造热塑性纤维（平均直径类似于760 nm）掺入T（g）基SMP基质中来实现。所得的复合材料显示两个良好分离的过渡，一个从基体的玻璃化转变，另一个从纤维的熔融，其随后用于两个临时形状的固定/恢复。提出并探讨了三种不同形状固定方案的热机械编程工艺。这种复合材料方法的内在多功能性使功能性三重形状聚合物和系统具有前所未有的设计灵活性。
In this paper, the fabrication and characterization of triple-shape polymeric composites (TSPCs) that, unlike traditional shape memory polymers (SMPs), are capable of fixing two temporary shapes and recovering sequentially from the first temporary shape (shape 1) to the second temporary shape (shape 2), and eventually to the permanent shape (shape 3) upon heating, are reported. This is technically achieved by incorporating non-woven thermoplastic fibers (average diameter similar to 760 nm) of a low-T(m) semicrystalline polymer into a T(g)-based SMP matrix. The resulting composites display two well-separated transitions, one from the glass transition of the matrix and the other from the melting of the fibers, which are subsequently used for the fixing/recovery of two temporary shapes. Three thermomechanical programming processes with different shape fixing protocols are proposed and explored. The intrinsic versatility of this composite approach enables an unprecedented large degree of design flexibility for functional triple-shape polymers and systems.