CAREER: Exploiting the Density Fluctuating Regime in Supercritical Fluids for Environmentally Green Polymer Surface Processing

职业：利用超临界流体中的密度波动机制进行环保聚合物表面处理

• 批准号: 0846267
• 负责人: Tadanori Koga
• 金额: $ 43万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-15 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846267&HistoricalAwards=false
• 关键词: CAREER; Exploiting; Density; Fluctuating; Regime

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The research objective of this award is to develop an integrated education and research program at Stony Brook University designed to play a leading role in the field of environmentally benign polymer surface processing. Supercritical carbon dioxide (scCO2) is a density fluctuating system which is known to be energetically unstable. Consequently, when confined near a polymer interface, the fluid is found to be driven across the interface into the polymer material, even when the enthalpy is unfavorable. Furthermore, since the phenomenon appears to be a function of only the amplitude of the density fluctuations in the fluid, it may also be independent of the particular polymer/fluid combinations, facilitating the use of density fluctuating scCO2 as a new process environment for polymer surface processing. The research described in this proposal will explore the underlying driving force for the density-fluctuation-induced surface phenomena. A variety of in-situ and real-time X-ray/neutron scattering techniques will be integrated to enable to form a comprehensive model of the interactions between the polymer and density fluctuating scCO2. This proposed activity will promote educational initiatives designed both to complement this research and, more generally, to advance science education at Stony Brook. The first component of this initiative involves the strengthening of an undergraduate thesis program for Chemical Engineering majors at Stony Brook University which encourages them to perform research as an integral part of their education. The second component of this initiative involves the creation of an interdisciplinary lab course on nanostructure characterization using X-ray scattering for upper-level undergraduates and beginning gradate students. A unique aspect of this course will be its use of a national scattering facility (at nearby Brookhaven National Lab.) including planning, executing and analyzing a focused set of measurements. A final initiative involves an international (Japan) collaborative program. Graduate students at Stony Brook will gain valuable research experience in Japan and expand their knowledge beyond their fields of study by interacting with Japanese professors and graduate students of different backgrounds and perspectives. Collectively, these efforts aim both to make the science community at Stony Brook more inclusive and to give the students a more varied experience.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。 该奖项的研究目标是在斯托尼布鲁克大学开发一个综合教育和研究计划，旨在在环境友好的聚合物表面处理领域发挥主导作用。超临界二氧化碳（scCO 2）是一种密度波动体系，已知其能量不稳定。因此，当被限制在聚合物界面附近时，发现流体被驱动穿过界面进入聚合物材料，即使当焓是不利的。此外，由于该现象看起来仅是流体中密度波动幅度的函数，因此它也可以独立于特定的聚合物/流体组合，从而便于使用密度波动scCO 2作为聚合物表面处理的新工艺环境。本提案中所述的研究将探索密度波动引起的表面现象的潜在驱动力。各种原位和实时X射线/中子散射技术将被集成，以形成聚合物和密度波动scCO 2之间的相互作用的综合模型。这项拟议的活动将促进旨在补充这项研究的教育举措，更普遍地说，促进斯托尼布鲁克的科学教育。该倡议的第一个组成部分涉及加强斯托尼布鲁克大学化学工程专业的本科论文计划，鼓励他们进行研究，作为其教育的一个组成部分。该倡议的第二个组成部分涉及到创建一个跨学科的实验室课程的纳米结构表征使用X射线散射高层次的本科生和初毕业生。本课程的一个独特之处在于它使用了国家散射设施（位于布鲁克海文国家实验室附近）。包括计划、执行和分析一组集中的测量。最后一项举措涉及国际（日本）合作计划。斯托尼布鲁克的研究生将在日本获得宝贵的研究经验，并通过与日本教授和不同背景和观点的研究生的互动，扩大他们的知识范围。总的来说，这些努力旨在使斯托尼布鲁克的科学界更具包容性，并为学生提供更多样化的体验。