Reversible Semicrystalline Polymer as Actuators Driven by Organic Solvent Vapor,Macromolecular Rapid Communications

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Reversible Semicrystalline Polymer as Actuators Driven by Organic Solvent Vapor
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2018-01-04 , DOI: 10.1002/marc.201700716
Guohui Hou ₁ , Fengle Wang ₁ , Zhe Qu ₁ , Zhiqiang Cheng ₁ , Yingchao Zhang ₁ , Shisheng Cai ₁ , Tao Xie ₂ , Xue Feng ₁

Affiliation

A semicrystalline polymer actuator, which is responsive to solvent vapor with fast and large scale locomotion, is described. The thermoset semicrystalline polymer can be easily synthesized from crystallizable polyester segment poly (ε‐caprolactone) and isophorone diisocyanate trimer. Organic solvent vapor is used to induce the reversible swelling‐crystallization conversion of the crystallizable polyester segment, resulting in its expansion/shrinkage. The contraction of the polymer actuator (1 mm thick) needs only ≈4 s in room temperature. When exposed to air the polymer actuator can exhibit a fast self‐oscillation. Then, a soft crawler based on this polymer is demonstrated. Driven by organic solvent it walks rapidly and steadily. The microscope images show the fast swelling‐crystallization conversion that gives rise to reversible shape changes of the polymer.

中文翻译：

由有机溶剂蒸气驱动的可逆半结晶聚合物作动器

描述了一种半结晶聚合物致动器，其以快速且大规模的运动响应溶剂蒸气。热固性半结晶聚合物可以容易地由可结晶的聚酯链段聚（ε-己内酯）和异佛尔酮二异氰酸酯三聚体合成。有机溶剂蒸气用于引起可结晶聚酯链段的可逆溶胀-结晶转化，从而导致其膨胀/收缩。在室温下，聚合物致动器（1毫米厚）的收缩仅需约4 s。当暴露在空气中时，聚合物执行器会表现出快速的自激振荡。然后，对基于该聚合物的软履带进行说明。在有机溶剂的驱动下，它可以快速稳定地行走。

更新日期：2018-01-04

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