Ellipsometer for aging studies in stable polymer glass

用于稳定聚合物玻璃老化研究的椭圆仪

基本信息

批准号：
RTI-2023-00020
负责人：
Forrest, James
金额：
$ 3.25万
依托单位：
University of Waterloo
依托单位国家：
加拿大
项目类别：
Research Tools and Instruments
财政年份：
2022
资助国家：
加拿大
起止时间：
2022-01-01 至 2023-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762973
关键词：
Ellipsometer aging studies stable polymer

项目摘要

This proposal requests funds for the purchase of an ellipsometer for the study of ultrastable polymer glass produced by physical vapour deposition.The most urgent need for the ellipsometer is for aging studies where the time dependence of physical quantities (such as density) is used to monitor the approach to equilibrium of glassy systems. Such measurements can require days to weeks of continuous measurement- something not possible on facility based instruments. What makes ultrastable glass, and in particular polymer ultrastable glass, so interesting is that the process of vapour deposition (mediated through enhanced surface mobility) allows for the production of materials that can be very close to equilibrium. In particular, some polymer glasses have been suggested to be comparable to liquid cooled glass that has been aged for millions of years! Such systems are very promising analogues for extreme aged materials, and as such are good candidates for materials very close to ideal glasses. In addition to the ability to characterize near-ideal glassy systems, such materials have a high density and superior mechanical properties that may be promising in many applications. HQP using the instrument will become experts in this common nano characterization tool and will learn about important but subtle aspects of model dependent derived (rather than directly measured) quantities. Such HQP have been found to be successful in both the private sector as well as academic career trajectories.

该提案要求购买椭圆机的资金，以研究由物理蒸气沉积产生的超强聚合物玻璃。对椭圆计的最迫切需求是用于衰老研究，其中使用物理量的时间依赖（例如密度）来监视玻璃系统平衡的方法。这样的测量可能需要几天到几周的连续测量 - 在基于设施的仪器上不可能。使超级玻璃，尤其是聚合物超级玻璃的原因是，有趣的是，蒸气沉积的过程（通过增强的表面迁移率介导）允许生产可能非常接近同等的材料。特别是，一些聚合物玻璃被认为与已经陈化了数百万年的液体冷却玻璃！这些系统是非常年迈的材料的非常有希望的类似物，因此是非常接近理想眼镜的材料的好候选者。除了表征近乎理想的玻璃系统的能力外，此类材料还具有高密度和出色的机械性能，在许多应用中可能有希望。使用该仪器的HQP将成为这种常见的纳米表征工具的专家，并将了解依赖模型的重要但细微的方面得出的（而不是直接测量）数量。已经发现此类HQP在私营部门和学术职业轨迹中都取得了成功。