Regulation of Glass Transition Temperature in Thermo-Responsive Epoxy Shape Memory Polymers: The Roles of Chemical Crosslinking Density and Chain Flexibility

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Polymer Science Pub Date : 2024-11-11 DOI:10.1002/pol.20240728

Yijia Guan, Hui Guo, Xiaofeng Jia, Jieyi Qin, Yue Yang, Kun Cao, Tao Li, Jianguo Liao, Yanru Zhang

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Abstract

Shape memory polymers (SMPs) are novel kinds of smart materials whose shape can be changed in external conditions such as heat stimulus. Due to their excellent structural versatility and high elastic strain, they have important applications in the field of biomaterials. Here, a series of amorphous shape memory polymer materials are prepared and their shape memory properties and glass transition temperature (T _g) are also investigated. A special kind of epoxy polymer, whose shape can be changed at around physiological temperature, is synthesized by regulating the crosslinking density and introducing flexible aliphatic epoxy chains. The shape memory function of this epoxy polymer is studied by deformation test. In addition, to explore their application in the field of biomedical materials, the biocompatibility of the materials are evaluated, including the effects on the erythrocyte hemolysis rate and cell activity. The experimental results show that this kind of epoxy polymer has good shape memory function and biocompatibility.

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热响应环氧形状记忆聚合物玻璃化温度的调节：化学交联密度和链柔性的作用

形状记忆聚合物（SMPs）是一种新型智能材料，其形状可在热刺激等外部条件下发生改变。由于其优异的结构通用性和高弹性应变，在生物材料领域有着重要的应用。本文制备了一系列非晶形状记忆聚合物材料，并对其形状记忆特性和玻璃化转变温度（Tg）进行了研究。通过调节交联密度和引入柔性脂肪族环氧链，合成了一种特殊的环氧聚合物，其形状可在生理温度左右改变。通过变形测试研究了这种环氧聚合物的形状记忆功能。此外，为了探索其在生物医学材料领域的应用，还对材料的生物相容性进行了评估，包括对红细胞溶血率和细胞活性的影响。实验结果表明，这种环氧聚合物具有良好的形状记忆功能和生物相容性。

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来源期刊

Journal of Polymer Science POLYMER SCIENCE-

CiteScore

6.30

自引率

5.90%

发文量

264

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.