AReversible Semicrystalline Polymeric Actuators

可逆半晶聚合物执行器

• 批准号: 398193778
• 负责人: Professor Dr. Leonid Ionov
• 金额: --
• 依托单位: Leibniz-Institut für Polymerforschung Dresden (IPF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/398193778?language=en
• 关键词: AReversible; Semicrystalline; Polymeric; Actuators

Among the whole variety of actuating polymers known so far only ones based on the melting/crystallization processes demonstrate a combination of important properties such as reversibility of actuation in absence of fields and solvents and actuation in the temperature range, which is practically relevant. There are several examples of such materials, but the physical origin of their actuation mechanism still remains elusive. This hampers a rational design of the actuation for instance by tailored modification of polymer properties. Our project aims to understand mechanisms of reversible actuation of semicrystalline polymers and to elucidate the correlations between thermal crystallization of crosslinked and entangled polymers under load and their chemical as well as physical structure. The key objectives of the project are: (i) investigation of thermal crystallization of crosslinked and non-crosslinked polymers under load; (ii) investigation of nano-confinement on thermal crystallization of crosslinked and non-crosslinked polymer under load; and (iii) investigation of actuation of model-bilayers consisting of active crystalline polymers and a passive layer. The project combines experimental studies, computer simulations and theory within the well-established collaboration between the two applicants. The ultimate goal is to open new horizons for the design of a new generation of active materials tailored for different applications including medicine, robotics and others.

在迄今为止已知的各种致动聚合物中，只有基于熔融/结晶过程的致动聚合物表现出重要性质的组合，例如在不存在场和溶剂的情况下致动的可逆性以及在温度范围内的致动，这实际上是相关的。有几个这样的材料的例子，但其驱动机制的物理起源仍然难以捉摸。这妨碍了例如通过聚合物性质的定制修改来合理设计致动。我们的项目旨在了解半结晶聚合物的可逆驱动机制，并阐明负载下交联和缠结聚合物的热结晶与其化学和物理结构之间的相关性。该项目的主要目标是：（i）研究负载下交联和非交联聚合物的热结晶;（ii）研究负载下交联和非交联聚合物热结晶的纳米限制;以及（iii）研究由活性结晶聚合物和被动层组成的模型双层的驱动。该项目将实验研究，计算机模拟和理论结合在两个申请人之间的良好合作中。最终目标是为设计新一代活性材料开辟新的视野，为包括医学，机器人等在内的不同应用量身定制。