NIR-Responsive, Bionic, Shape Memory Polymers with Dynamically Cross-Linking Network

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2024-08-08 DOI:10.1021/acsapm.4c0154610.1021/acsapm.4c01546

Zequan Li, Hong Li, Ting Xie and Wei Gao*,

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引用次数: 0

Abstract

Shape memory polymers (SMPs) are a class of stimulus-responsive materials that are capable of restoring shape after heating. With the development of science and technology, the requirements for shape memory materials are getting higher and higher to meet the needs of different applications. However, these conventional shape memory materials are hard to be remodeled into different shapes due to their cross-linking structure. Meanwhile, the single-heating-triggered shape memory effect limits the application scenarios of SMPs. Herein, we reported a dynamically cross-linking polymer network using polycaprolactone copped with dopamine (PCL-Dopa) and complex ion Fe³⁺ to realize the remodeling of polymers after shape restoration. In addition, based on the photothermal conversion of metal–organic coordination formed by PCL-Dopa and Fe³⁺, such SMPs can achieve a sensitive photothermal response and realize the shape memory effect. Therefore, these PCL-Dopa-Fe³⁺ polymers have the potential to be applied in light-responsive switches, brakes, and other scenarios.

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具有动态交联网络的近红外响应性仿生形状记忆聚合物

形状记忆聚合物（SMP）是一类能够在加热后恢复形状的刺激响应材料。随着科学技术的发展，人们对形状记忆材料的要求越来越高，以满足不同应用的需要。然而，这些传统的形状记忆材料由于其交联结构，很难重塑成不同的形状。同时，单一加热触发的形状记忆效应也限制了 SMP 的应用场景。在此，我们报道了一种使用多巴胺（PCL-Dopa）和络离子Fe3+共聚的聚己内酯动态交联聚合物网络，以实现聚合物形状恢复后的重塑。此外，基于 PCL-Dopa 和 Fe3+ 形成的金属有机配位的光热转换，这种 SMP 可实现灵敏的光热响应，并实现形状记忆效应。因此，这些 PCL-Dopa-Fe3+ 聚合物有望应用于光响应开关、制动器等领域。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.