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Updated: May 24, 2025

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制造可远程控制的动态离子体/CNT网络,通过子-π相互作用实现多响应形状记忆和自我修复能力

Yi Xiao¹, Dan Liu¹, Ling-Ying Shi²

¹The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China.

ACS applied materials & interfaces

|March 5, 2025

概括

这项研究引入了一种新的离子体/碳纳米管复合物,用于先进的形状记忆聚合物 (SMP). 这些材料提供远程可控的形状记忆效果和自我修复,这对于智能设备至关重要.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
纳米技术纳米技术

背景情况:

形状记忆聚合物 (SMP) 对于生物医学和航空领域的执行应用至关重要.
遥控触发是高级SMP应用程序的关键要求.

研究的目的:

开发一种新的离子体/碳纳米管 (CNT) 复合网络,具有增强的形状记忆效应 (SME) 和自我修复能力.
为了改善材料性能,研究离子集群和阴离子-π相互作用的协同效应.

主要方法:

通过对四分位氨 (QA) 单元与晶体聚烯酸 (PCL) 片段进行共聚性结合,合成PCLQA离子体.
将多反应性碳纳米管 (CNT) 嵌入PCLQA矩阵中,以形成PCLQA@CNT复合材料.
描述了开发的复合材料的机械性能,形状记忆性能和抗菌作用.

主要成果:

PCLQA@CNT复合材料表现出优越的机械性能 (抗拉强度> 40 MPa,破裂延伸> 1900%).
获得了优异的热诱导SME,具有高形状固定性 (99.6%) 和回收性 (92.3%).
通过远程刺激 (NIR和电气) 显示出显著的抗菌活性 (>99%) 和自我愈合能力.

结论:

新型PCLQA@CNT网络由离子集群和阴离子-π相互作用稳定,提供强大的,可远程控制的形状记忆和自我修复特性.
该材料的增强性能和多功能性为先进的智能设备铺平了道路.
这项研究强调了离子体/CNT复合材料在下一代智能材料中的潜力.

关键词:

电离π 相互作用离子体是什么? 离子体是什么?多响应式多响应式它具有自我愈合的功能.形状记忆的聚合物聚合物.

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