Morphology Control of Olefin Based Homo- and Copolymers in Catalytic Gas-Phase, Slurry and Emulsion Polymerization

催化气相、淤浆和乳液聚合中烯烃基均聚物和共聚物的形态控制

• 批准号: 1058079
• 负责人: K. Wagener
• 金额: $ 48万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1058079&HistoricalAwards=false
• 关键词: Morphology; Control; Olefin; Based; Homo

In this project, funded by the Macromolecular, Supramolecular, and Nanochemistry Program of the Chemistry Division, Kenneth Wagener and Stephen Miller of the Department of Chemistry at the University of Florida will investigate the architectural expansion of available polyolefin structures. This objective will be made possible through a variety of methods. With newly developed single-site catalysts, characteristics such as catalyst structure, activation processes, polymerization kinetics-under homogeneous as well as heterogeneous conditions-and, especially, immobilization/supporting techniques will be controlled for the development of new polymerization systems. Key parameters include control of tacticity, product morphology (size, shape of product particles), polymer molecular weight, comonomer incorporation, and comonomer sequence distribution. Special challenges to be addressed are the formation of core-shell structures of polyolefins and the use of polar monomers. Also, the elusive formation of polyolefin nanoparticles will be sought. An interdisciplinary approach will be applied and strengths found in five separate research groups will be combined and exploited. The five lead investigators are Klaus Müllen (Max-Planck Institute for Polymer Research, Mainz, Germany), Brigitte Voit (Leibniz-Institute für Polymerforschung, Dresden, Germany), Kenneth Wagener, Stephen Miller, and Heloise O. Pastore (Universidade de Campinas, Brazil). The broader impacts involve holding workshops on the research topics, scientific interactions with polyolefin companies, and international training of U.S. graduate students. Graduate students will conduct their research projects in the laboratory of a foreign collaborator for several months. These student exchanges will help develop an infrastructure for research and education and greatly enhance the international dimension of their training experience.The successful execution of this research project will result in new plastic materials with properties that are improved and finely-tuned compared to available products. There exists a wide variety of potential applications, including strong lightweight plastics, composite materials, and specialty polymers.

在这个项目中，由化学部的大分子、超分子和纳米化学项目资助，佛罗里达大学化学系的Kenneth Wagener和Stephen米勒将研究现有聚烯烃结构的建筑扩展。 将通过各种方法实现这一目标。 随着新开发的单活性中心催化剂，特性，如催化剂结构，活化过程，聚合动力学，在均匀和非均匀条件下，特别是，固定/支持技术将被控制为新的聚合系统的开发。 关键参数包括控制立构规整度、产物形态（产物颗粒的尺寸、形状）、聚合物分子量、共聚单体掺入和共聚单体序列分布。 需要解决的特殊挑战是聚烯烃核壳结构的形成和极性单体的使用。 此外，将寻求难以实现的聚烯烃纳米颗粒的形成。 一个跨学科的方法将被应用，并在五个独立的研究小组中发现的优势将被结合和利用。 五位主要研究者是Klaus Müllen（Max-Planck Institute for Polymer Research，Mainz，德国）、Brigitte Voit（Leibniz-Institute für Polymerforschung，Dresden，德国）、Kenneth Wagener、Stephen米勒和Heloise O。Pastore（巴西坎皮纳斯大学）。 更广泛的影响包括举办研究主题研讨会，与聚烯烃公司的科学互动以及美国研究生的国际培训。 研究生将在外国合作者的实验室进行几个月的研究项目。 这些学生交换将有助于发展研究和教育的基础设施，并大大提高他们的培训经验的国际层面。该研究项目的成功执行将导致新的塑料材料，其性能与现有产品相比得到改进和微调。 存在各种各样的潜在应用，包括坚固的轻质塑料、复合材料和特种聚合物。