Thermoset Light-Responsive Biopolyester Composite with Intrinsic Permanent Shape Reconfigurability and Degradability

IF 5.2 1区化学 Q1 POLYMER SCIENCE Macromolecules Pub Date : 2025-01-29 DOI:10.1021/acs.macromol.4c03088

Nur Syahirra Nordin, Xiangping Chen, Mun-Oon Fong, Tow-Jie Lok, Yaoting Xue, Siyang Li, Tao Feng, Yifeng Shen, Qiannan Hu, Kaihang Zhang, Qian Zhao, Tuck-Whye Wong, Jie-Wei Wong, Tiefeng Li

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Abstract

Adding functional nanoparticles to polymers is a popular approach to indirectly trigger the shape-memory effect (SME). Existing shape-memory polymer composites usually involve the use of solvents, catalysts, and initiators during synthesis. By polyesterification, in this article, we present a sustainable polyester matrix for a shape-memory polymer (SMP) composite consisting of carbon nanotubes (CNTs), which possess combined features. Owing to the photothermal conversion capability of the CNTs, selective triggering of the shape-memory behavior in different regions of the composite and photoweldability are made possible. Leveraging its intrinsic dynamic bond nature, the material can be reshaped at least five times, which is comparable with existing bond exchange networks. Additionally, ester bonds within the material enable hydrolytic degradation after its applications. We envision that this material design principle can be potentially applied on the fabrication of stimuli-responsive actuators for soft robots with complex geometries that also require degradability.

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具有固有永久形状可重构性和可降解性的热固性光响应生物聚酯复合材料

在聚合物中加入功能性纳米颗粒是间接触发形状记忆效应（SME）的一种流行方法。现有的形状记忆聚合物复合材料在合成过程中通常需要使用溶剂、催化剂和引发剂。通过聚酯化，在本文中，我们提出了一种可持续的聚酯基体，用于由碳纳米管（CNTs）组成的形状记忆聚合物（SMP）复合材料，其具有组合特征。由于CNTs的光热转换能力，可以在复合材料的不同区域选择性地触发形状记忆行为和光可焊性。利用其固有的动态键性质，材料可以至少重塑五次，这与现有的键交换网络相当。此外，材料内的酯键使其应用后能够水解降解。我们设想这种材料设计原理可以潜在地应用于具有复杂几何形状的软体机器人的刺激响应驱动器的制造，这些驱动器也需要可降解性。

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.