Fabricating a single polymer network with no need to design complex structures to achieve an ideal combination of tunable high‐strain multiple‐shape memory effects and highly recoverable shape memory property is a great challenge for the real applications of advanced shape memory devices. Here, a facile and general approach to recoverable high‐strain multishape shape memory polymers is presented via a random copolymerization of acrylate monomers and a chain‐extended multiblock copolymer crosslinker. As‐prepared shape memory networks show a large width at the half‐peak height of the glass transition, far wider than current classical multishape shape memory polymers. A combination of tunable high‐strain multishape memory effect and as high as 1000% recoverable strain in a single chemical‐crosslinking network can be obtained. To the best of our knowledge, this is the first thermosetting material with a combination of highly recoverable strain and tunable high‐strain multiple‐shape memory effects.

中文翻译：

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一种可恢复的高应变多形形状记忆聚合物的简便通用方法

对于先进的形状记忆器件的实际应用而言，制造单个聚合物网络而无需设计复杂的结构即可实现可调谐的高应变多形状记忆效应和高度可恢复的形状记忆特性的理想组合。在此，通过丙烯酸酯单体与扩链多嵌段共聚物交联剂的无规共聚，提出了一种可回收的高应变多形形状记忆聚合物的简便通用方法。预先准备好的形状记忆网络在玻璃化转变的半峰高处显示出较大的宽度，远比当前的经典多形形状记忆聚合物宽。可在单个化学交联网络中获得可调节的高应变多形记忆效应与高达1000％的可恢复应变的组合。