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基于自适应共价网络的多功能形状记忆聚合物

Multifunctional shape memory polymers based on adaptive covalent networks
课程网址: http://videolectures.net/preglov_jerome_multifunctional_memory/  
主讲教师: Christine Jérôme
开课单位: 利格大学
开课时间: 2018-12-03
课程语种: 英语
中文简介:
形状记忆聚合物(SMPs)是一种出色的材料,能够通过跨越热转变(如熔融转变)从临时形状转变为初始永久形状。对于化学交联的半结晶聚合物,可以观察到有效的形状记忆效应。半结晶聚(ε-己内酯)的化学网络在SMPs的开发中得到了广泛的研究,尤其是在生物医学应用方面。由于这些SMP是不可逆交联材料,它们的(再)加工非常有限,因为它们在交联后不能熔融或溶解。这防止了任何回收。因此,使用可逆交联反应,允许在选定的刺激下形成或裂解网络,引起了智能开关电源开发的巨大兴趣。因此,我们合成并研究了对各种刺激(温度、光、应力)敏感的共价自适应网络,从而形成多功能形状记忆材料。
课程简介: Shape-memory polymers (SMPs) are remarkable materials able to switch from a temporary shape to their initial permanent shape by crossing a thermal transition, e.g. melting transition. Efficient shape-memory effect is notably observed for chemically cross-linked semi-crystalline polymers. Chemical networks of semi-crystalline poly(εcaprolactone) are widely studied for the development of SMPs especially when biomedical applications are foreseen. As these SMPs are irreversibly cross-linked materials, their (re)processing is quite limited since they cannot be molten or solubilized after cross-linking. This prevents any recycling. Thereby, using reversible cross-linking reactions allowing the formation or cleavage of the network upon a selected stimulus, raise tremendous interest for the development of smart SMPs. Therefore, we have synthesized and studied covalent adaptive networks sensitive towards various stimuli (temperature, light, stress) leading to multifunctional shape memory materials.
关 键 词: 形状记忆聚合物; 形状记忆效应; 生物医学应用
课程来源: 视频讲座网
数据采集: 2021-11-11:zkj
最后编审: 2021-11-11:zkj
阅读次数: 92