Fundamental Studies of Polymerization Processes

聚合过程的基础研究

• 批准号: 9908156
• 负责人: W. Harmon Ray
• 金额: $ 27.56万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908156&HistoricalAwards=false
• 关键词: Fundamental; Studies; Polymerization; Processes

More than 100 billion pounds/year of synthetic polymers were produced in the U.S. in 1997 in a wide variety of polymerization reactors. Ultimately the products from these reactors are used in, among others, synthetic clothing, automotive structural components, optical disks, and latex paints.The PI plans to continue his research on fundamental studies of polymerization processes. In this project he plans to make use of detailed models for both homogeneous and heterogeneous catalytic polymerization reactors to analyze and explain observed experimental measurements of polymerization rates, molecular weight distribution, copolymer composition, chain branching, tactility, and other properties. Special emphasis will be on determining the kinetic behavior and polymer product characteristics of metallocene and other single-site catalysts. Close comparison of experimental results and model predictions will be made in order to validate the models. From these models, the PI expects to predict the range of reactor design and operation parameters for which target polymer properties and desired process behavior are possible in full scale reactors. As part of the study, multiphase thermodynamic models will be created through the use of microscale simulations and experimental data. These will be used to create equation-of-state models and phase-separation models for several classes of polymerization processes. The expected work products are a deeper understanding and better models - enabling the design and operation of reactors capable of producing more uniform and higher quality polymer products.

1997年，美国在各种聚合反应器中生产了超过1000亿磅/年的合成聚合物。 最终，这些反应器的产物被用于合成服装、汽车结构部件、光盘和乳胶漆等领域。PI计划继续他的聚合过程基础研究。 在这个项目中，他计划利用均相和非均相催化聚合反应器的详细模型来分析和解释聚合速率，分子量分布，共聚物组成，链支化，结晶度和其他性能的实验测量。 重点将放在确定茂金属和其他单位点催化剂的动力学行为和聚合物产品特性。 为了验证模型，将对实验结果和模型预测进行密切比较。 根据这些模型，PI预期预测反应器设计和操作参数的范围，对于这些参数，目标聚合物性质和期望的工艺行为在全规模反应器中是可能的。 作为研究的一部分，将通过使用微尺度模拟和实验数据创建多相热力学模型。 这些将用于创建状态方程模型和相分离模型的几类聚合过程。 预期的工作成果是更深入的理解和更好的模型-使反应器的设计和操作能够生产更均匀和更高质量的聚合物产品。