Bridging Polymer and Glass Physics

桥接聚合物和玻璃物理

• 批准号: 2888443
• 金额: --
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2888443
• 关键词: Bridging; Polymer; Glass; Physics

In this project, we will establish a unified description of supercooling, viscoelasticity, and vitrification in a family of molecules-the transition metal alkoxides-whose behaviour bridges that of polymers and small-molecule glass formers. The temperature-dependent properties of materials are of enormous importance to their practical application and therefore a thorough understanding of the molecular origin of these properties is critically important. A wide range of techniques will be used including advanced rheology down to -160C, DSC, Raman, and SAXS/WAXS to characterise macroscopic properties. This is combined with atomistic computer simulations (by collaborators) to provide insights into molecular level structure and dynamics responsible for the macroscopic behaviour. Our overall aim is then to forge a deep connection between polymer and glass physics in order to produce a paradigm shift in fundamental materials science that will ultimately lead to a more rational design of amorphous materials with implications for all areas where glasses are utilised from polymer, oxide, chalcogenide, metallic, organic, to metal-organic framework (MOF) glasses involving applications from amorphous drugs, ultra-strong metallic glasses used in airplane engines, optoelectronic materials, to containment for high-level nuclear waste.

在这个项目中，我们将建立一个对过渡金属醇盐分子家族的过冷、粘弹性和玻璃化的统一描述，其行为将聚合物和小分子玻璃形成体的行为联系起来。材料的温度依赖性特性对其实际应用至关重要，因此彻底了解这些特性的分子起源至关重要。将使用多种技术，包括低至 -160C 的先进流变学、DSC、拉曼和 SAXS/WAXS 来表征宏观特性。这与原子计算机模拟（由合作者）相结合，以提供对分子水平结构和负责宏观行为的动力学的见解。我们的总体目标是在聚合物和玻璃物理学之间建立深刻的联系，以产生基础材料科学的范式转变，最终将导致更合理的非晶态材料设计，对使用聚合物玻璃的所有领域产生影响，氧化物、硫族化物、金属、有机玻璃到金属有机框架 (MOF) 玻璃，涉及从非晶态药物、飞机发动机中使用的超强金属玻璃、光电材料到高放核废料密封等应用。