Vapor sorption characterizes advanced materials for the water--energy--food nexus

蒸汽吸附是水-能源-食品关系先进材料的特征

• 批准号: RTI-2023-00224
• 负责人: Tavares, Jason
• 金额: $ 10.93万
• 依托单位: École Polytechnique de Montréal
• 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=753760
• 关键词: Vapor; sorption; characterizes; advanced; materials

Vapor sorption analysis (VSA) is a necessary component to evaluate a material's response to moisture and other solvents. It is a key analytical step to validate advanced materials finding applications in water harvesting, polymer netting, thin films, novel adsorbents, natural fibre systems and thermoplastic composites. Such applications show promise to invert the negative feedback loops characteristic of the water-food-energy nexus. For example, while increases in agricultural yields have in the past come at the expense of greater pesticide runoff and increased energy for pesticide production and deployment, the use of advanced polymer nets can instead reduce water contamination and energy use. However, the development of such novel materials requires appropriate characterization in a laboratory setting. VSA can be accomplished through volumetric and gravimetric approaches, each with their advantages and disadvantages. On top of providing information pertaining to adsorption and desorption of various compounds, VSA also provides insight into total surface area and (through models) pore size distribution. Gravimetric approaches are the most common (despite their very long analysis times), and volumetric systems are essentially nonexistant. Further, despite being more prevalent, gravimetric VSAs are generally unavailable in the Montreal area and have required the applicant, co-applicants and prospective users to rely on extensive travel, sample shipping out-of-province or the deployment of unstandardized, low grade (and low precision) homemade alternatives in order to proceed with their work. These efforts have been further limited to strictly the study of humidity adsorption, as the use of other solvents was not possible on such instruments. The diverse research team assembled represents actors from chemical engineering, mechanical engineering and engineering physics, across 3 universities in Montreal. All have as their core values the training of highly qualified personnel from various backgrounds, aiming first and foremost to contribute value-added personnel with real-world, transferable skills to the Canadian economy. Students are the first deliverable of a university professor, and the acquisition of a VSA instrument will not only advance the high-impact research being undertaken, but also solidify a world-class, multidisciplinary training environment. This instrument will be made widely available to the Montreal academic community, and publicized accordingly on a variety of databases (not the least of which is the CREPEC consortium).

蒸气吸附分析（VSA）是评估材料对水分和其他溶剂的反应的必要组成部分。这是验证先进材料在水采集，聚合物网络，薄膜，新型吸附剂，天然纤维系统和热塑性复合材料中的应用。这种应用显示出有望扭转水食品 - 能量连接的负反馈回路的特征。例如，虽然过去的农业产量增加是以牺牲更大的农药径流和农药生产和部署能量增加的代价，但使用高级聚合物网可以减少水的污染和能源使用。但是，这种新型材料的发展需要在实验室环境中进行适当的表征。 VSA可以通过体积和重量法的方法来实现，每种方法的优点和缺点。除了提供与各种化合物的吸附和解吸有关的信息之外，VSA还提供了对总表面积和（通过模型）孔径分布的见解。重量法是最常见的（尽管分析时间很长），并且体积系统本质上是不存在的。此外，尽管更为普遍，但在蒙特利尔地区通常无法使用Gravimetric VSA，并且要求申请人，共同申请人和潜在的用户依靠广泛的旅行，过度运输或部署非标准化，低级（和低级和低精度）的自制替代方案才能继续进行工作。这些努力进一步局限于严格研究湿度吸附的研究，因为在这种仪器上不可能使用其他溶剂。多样化的研究团队组装代表蒙特利尔3所大学的化学工程，机械工程和工程物理学的演员。所有人都具有他们的核心价值观，是对来自各种背景的高素质人员的培训，首先旨在为加拿大经济提供具有现实世界，可转移技能的增值人员。学生是大学教授的第一个可交付的人，对VSA工具的获取不仅会推进正在进行的高影响力研究，而且还可以巩固世界一流的多学科培训环境。该工具将被广泛地向蒙特利尔学术界提供，并在各种数据库上进行宣传（其中最重要的是CREPEC财团）。