New chromatographic separation systems for polyolefins - theoretical explorations and experimental realization

新型聚烯烃色谱分离系统——理论探索与实验实现

• 批准号: 0724117
• 负责人: Yongmei Wang
• 金额: $ 21.86万
• 依托单位: University of Memphis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0724117&HistoricalAwards=false
• 关键词: New; chromatographic; separation; systems; polyolefins

The Analytical and Surface Chemistry Program in the Division of Chemistry supports the collaborative research program of Profs. Yongmei Wang at the University of Memphis and Tibor Macko of the Deutches Kunstoff-Instituet. The award is co-funded by the Office of International Science and Engineering at NSF, and coordinates with a collaborative award funded by the Deutsche Forschungsgemeinschaft (DFG). The work utilizes theoretical/computational methods to explore new chromatographic separation systems of polyolefins according to their chemical composition and chain architectures. Polyolefins are the most widely produced synthetic polymer commodity worldwide. Like most synthetic polymer samples, they have distributions in molar mass, chemical composition, functionality, and/or chain architectures. Although other analytical methods such as preparative fractionation followed by NMR analysis can be used for determination of some of these distributions, chromatography-based methods often enjoy better robustness and efficiency. These studies entail collaboration with scientists at the German Institute of Polymer Science (DKI) to develop adsorption- and/or precipitation-based liquid chromatographic separation modes for polyolefins, thereby enabling chromatographic-based separation according to chemical composition and/or chain architectures.The broader impact of this project includes both a technical aspect and an education component. Development of chromatographic separations of polyolefins based on adsorption and/or precipitation will enable faster and more detailed molecular characterization. This in turn will impact industries that produce approximately 100 million tons of polyolefins annually. The project also supports training of graduate and undergraduate students in an interdisciplinary area that involves statistical mechanics theory, polymer science, and surface and separation science. The project engages students in international scientific collaboration, preparing them to be future international leaders in research and education.

化学系的分析和表面化学项目支持教授的合作研究项目。孟菲斯大学的王永梅和德意志艺术研究所的蒂博尔·马科。该奖项由美国国家科学基金会（NSF）国际科学与工程办公室共同资助，并与德国科学研究协会（DFG）资助的合作奖相协调。根据聚烯烃的化学组成和链结构，利用理论/计算方法探索新的聚烯烃色谱分离体系。聚烯烃是世界上生产最广泛的合成聚合物商品。像大多数合成聚合物样品一样，它们在摩尔质量、化学组成、功能和/或链结构方面都有分布。虽然其他分析方法，如制备分馏后的核磁共振分析可以用于确定这些分布中的一些，但基于色谱的方法通常具有更好的鲁棒性和效率。这些研究需要与德国聚合物科学研究所（DKI）的科学家合作，开发基于吸附和/或沉淀的聚烯烃液相色谱分离模式，从而实现基于化学成分和/或链结构的色谱分离。这个项目更广泛的影响包括技术方面和教育方面。基于吸附和/或沉淀的聚烯烃色谱分离的发展将使分子表征更加快速和详细。这反过来又会影响每年生产约1亿吨聚烯烃的工业。该项目还支持跨学科领域的研究生和本科生的培训，涉及统计力学理论、聚合物科学、表面和分离科学。该项目让学生参与国际科学合作，为他们成为未来研究和教育领域的国际领导者做好准备。