GOALI: Thermal Field-Flow Fractionation for Polymers of High Molecular Weight and Complex Architectures

GOALI：高分子量和复杂结构聚合物的热场流分级

• 批准号: 0515521
• 负责人: Kim Williams
• 金额: $ 35.85万
• 依托单位: Colorado School of Mines
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-15 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0515521&HistoricalAwards=false
• 关键词: GOALI; Thermal; Field; Flow; Fractionation

Professor Kim R. Williams of Colorado School of Mines and Dr. Thomas D. Hahn of National Starch and Chemical Company are supported by the Analytical and Surface Chemistry Program in the Division of Chemistry to investigate fundamental and applied aspects of thermal field-flow fractionation (ThFFF). An extensive systematic study will be conducted on model polymers to determine the effect of polymer composition, polymer architecture, and solvents on polymer thermal diffusion coefficients (DT). Regression methods will be used to obtain equations that relate DT to different polymer and solvent properties. Insights gained from these studies will lead to better understanding of thermophoresis, ThFFF, and industrially important polymer materials. Molecular weight and structural information of the ThFFF-separated polymers will be measured using a multiangle light scattering-quasielastic light scattering-refractive index-detector combination. The demand for complex polymers and polymer mixtures exhibiting diverse performance requirements increases with the steady increase in societal needs for specialized products. Development of ThFFF to a stage where analysis can be readily performed on commercially viable, mixed-class polymers will be a key analytical technology advancement, impacting both cost and availability of these products to the consumer. This project will train students in modern methods of polymer analysis and provide them with multiple opportunities to interact with scientists and technicians at an industrial facility.

金教授科罗拉多矿业学院的威廉姆斯博士和托马斯D.国家淀粉和化学公司的Hahn得到化学部分析和表面化学计划的支持，研究热场流分馏（ThFFF）的基本和应用方面。 一个广泛的系统的研究将进行模型聚合物，以确定聚合物的组成，聚合物结构，和溶剂对聚合物的热扩散系数（DT）的影响。 将使用回归方法获得DT与不同聚合物和溶剂性质相关的方程。 从这些研究中获得的见解将导致更好地理解热泳，ThFFF和工业上重要的聚合物材料。 使用多角度光散射-准弹性光散射-折射率-检测器组合测量ThFFF分离的聚合物的分子量和结构信息。 随着社会对专用产品需求的稳步增长，对表现出不同性能要求的复杂聚合物和聚合物混合物的需求也在增加。将ThFFF开发到可以容易地对商业上可行的混合类聚合物进行分析的阶段将是关键的分析技术进步，这将影响这些产品对消费者的成本和可用性。 该项目将培训学生现代聚合物分析方法，并为他们提供与工业设施的科学家和技术人员互动的多种机会。