Abstract Shape memory polymers (SMPs) are capable of changing their shapes in a pre-defined manner under a stimulus, and have gained considerable interest in the past decades. Although a number of stimulus-responsive SMPs have been developed, thermally-induced SMPs are still the most common. This review presents the concepts, the programming procedures, the molecular mechanism, classification, design strategies and the recent progress of thermally-induced SMPs, including dual, triple, multiple SMPs and two-way reversible SMPs (2W-SMPs) activated by direct and indirect heating method. Examples of the applications of these types of SMPs are also presented and discussed.

中文翻译：

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多路和双向可逆形状记忆聚合物：设计策略和应用

摘要 形状记忆聚合物 (SMP) 能够在刺激下以预定方式改变其形状，并在过去几十年中引起了相当大的兴趣。尽管已经开发了许多刺激响应 SMP，但热诱导 SMP 仍然是最常见的。这篇综述介绍了热诱导 SMPs 的概念、编程程序、分子机制、分类、设计策略和最新进展，包括双、三、多 SMPs 和双向可逆 SMPs (2W-SMPs)。间接加热法。还介绍和讨论了这些类型的 SMP 的应用示例。