异酸盐结构对可回收形状记忆的影响 聚甲)
Yu Zeng1, Jiale Song1, Jinfu Li1
1Department of Polymer Materials and Engineering, School of Materials Science and Engineering, Chang'an University, Xi'an 710018, China.
Materials (Basel, Switzerland)
|June 10, 2023
概括
新的可生物降解聚乙烯材料具有出色的形状记忆和再加工能力. 它们的可调节性质使它们适用于人工肌肉和传感器等智能应用.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 生物材料是一种生物材料.
背景情况:
- 形状记忆聚合物 (SMP) 是一种先进的材料,能够在触发时恢复原始形状.
- 聚乙 (PTU) 为各种应用提供可调节的性能.
- 生物降解材料对于可持续的技术发展至关重要.
研究的目的:
- 合成和描述具有不同结构的新型聚乙 (PTU).
- 为了研究结构-属性关系,规范形状记忆行为和生物降解性.
- 探索这些PTU在智能响应应用中的潜力.
主要方法:
- 通过点击化学合成PTU,使用三甲基醇三3-甲) (S3) 和各种二酸盐 (HDI,IPDI,TDI).
- 福里埃变换红外光谱 (FTIR) 用于反应速率分析.
- 测试形状记忆属性 (形状恢复和固定性).
- 机械测试和体外降解研究.
主要成果:
- 基于TDI的PTU显示出最快的反应速率,这是由于结合和固体效应.
- 所有合成的PTU都显示出出色的形状记忆特性 (超过90%的恢复和固定性).
- 增加的链条刚性对形状回收和固定性产生了负面影响,但在回收时提高了机械性能.
- 在试验室中,PTU的降解速度各不相同,这表明它们有可能成为可生物降解材料.
- 接触角测量表明了长期或中期应用的潜力.
结论:
- 该研究成功合成了具有可调节性质和出色形状记忆的PTU.
- 链条刚性是影响形状记忆性能和回收后机械完整性的关键因素.
- 生物降解性和可调节性特征使PTU成为人工肌肉,软机器人和传感器中智能材料的有希望的候选者.
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