Vitrimer-Like Shape Memory Polymers: Characterization and Applications in Reshaping and Manufacturing.
Vitrimer-Like Shape Memory Polymers: Characterization and Applications in Reshaping and Manufacturing.
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DOI：
10.3390/polym12102330
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发表时间：
2020-10-12
期刊：
影响因子：
5
通讯作者：
Huang WM
中科院分区：
文献类型：
--
作者：
Wang TX;Chen HM;Salvekar AV;Lim J;Chen Y;Xiao R;Huang WM
形状记忆效应（SME）是指材料恢复其原始形状的能力，但只有在存在正确刺激的情况下。大多数聚合物，无论是热塑性聚合物还是热固性聚合物，都可以具有 SME，尽管实际的形状记忆性能根据具体材料和材料的加工方式而有所不同。 Vitrimer介于热固性材料和热塑性材料之间，具有可逆交联的特点。类Vitrimer形状记忆聚合物（SMP）结合了类Vitrimer行为（与解离共价适应性网络相关）和SME，可用于实现传统聚合物难以实现的许多新功能。在本文的第一部分中，使用商业聚合物来演示如何表征基于热响应 SME 的类 vitrimer 行为。在第二部分中，通过一系列案例来揭示类vitrimer SMP及其复合材料的潜在应用。结论是，类似vitrimer的特征不仅能够实现聚合物重塑的许多新方法，而且还可以带来新的制造方法，例如在太空/空中/海上任务中进行固态快速3D打印。
The shape memory effect (SME) refers to the ability of a material to recover its original shape, but only in the presence of a right stimulus. Most polymers, either thermo-plastic or thermoset, can have the SME, although the actual shape memory performance varies according to the exact material and how the material is processed. Vitrimer, which is between thermoset and thermo-plastic, is featured by the reversible cross-linking. Vitrimer-like shape memory polymers (SMPs) combine the vitrimer-like behavior (associated with dissociative covalent adaptable networks) and SME, and can be utilized to achieve many novel functions that are difficult to be realized by conventional polymers. In the first part of this paper, a commercial polymer is used to demonstrate how to characterize the vitrimer-like behavior based on the heating-responsive SME. In the second part, a series of cases are presented to reveal the potential applications of vitrimer-like SMPs and their composites. It is concluded that the vitrimer-like feature not only enables many new ways in reshaping polymers, but also can bring forward new approaches in manufacturing, such as, rapid 3D printing in solid state on space/air/sea missions.
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DOI：
10.1073/pnas.1301895110
发表时间：
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影响因子：
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