mechanically robust supramolecular polymer

机械坚固的超分子聚合物

• 批准号: 22KJ0970
• 负责人: 程 逸人
• 金额: $ 1.09万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ0970/
• 关键词: supramolecular; salt bridge; sustainable; self-healing; degradable; polymer glasses

Polymer glasses have undoubtedly brought significant advancements to our modern lives. However, the increasing plastic pollution poses severe threats to our planet. My research is dedicated to addressing this urgent issue, with a focus on developing sustainable polymer materials.Supramolecular polymers, which are connected by non-covalent bonds, offer promising solutions for sustainable polymer use. Despite this, their weak bond energies have resulted in perceived lower mechanical properties.In this study, we present a new approach to constructing robust supramolecular polymer materials by linking two types of small molecules with salt-bridges, one of the strongest non-covalent interactions. The high physical cross-linking densities endow supramolecular polymer glasses (SPGs) with remarkable mechanical properties.Furthermore, we have modulated the mechanical properties, humidity stability, rheology properties, and processing conditions of SPGs by adjusting the spacer of monomers. Notably, SPGs can be easily self-healed and recycled under mild conditions, offering a promising solution for achieving a green and sustainable society.To gain a deeper understanding of the underlying mechanisms, we employed advanced techniques such as FTIR and broadband dielectric spectrum to investigate the properties of SPGs.

聚合物玻璃无疑为我们的现代生活带来了重大进步。然而，日益严重的塑料污染对我们的星球构成了严重威胁。我的研究致力于解决这一紧迫问题，重点是开发可持续的聚合物材料。超分子聚合物通过非共价键连接，为聚合物的可持续使用提供了有前途的解决方案。尽管如此，它们的弱键能导致了较低的机械性能。在这项研究中，我们提出了一种新的方法来构建强大的超分子聚合物材料，通过连接两种类型的小分子与盐桥，最强的非共价相互作用之一。高物理交联密度赋予了超分子聚合物玻璃（SPG）优异的力学性能，并通过调节单体的间隔基来调控SPG的力学性能、湿稳定性、流变性能和加工条件。特别是SPG在温和的条件下可以很容易地自我修复和回收，为实现绿色和可持续发展的社会提供了一个有希望的解决方案。为了更深入地了解其内在机制，我们采用了先进的技术，如FTIR和宽带介电谱来研究SPG的特性。