Mechanisms of Polymerization in the Gas Phase, in Clusters and on Nanoparticle Surfaces

气相、团簇和纳米粒子表面的聚合机制

• 批准号: 0414613
• 负责人: Mohamed Samy El-Shall
• 金额: --
• 依托单位: Virginia Commonwealth University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0414613&HistoricalAwards=false
• 关键词: Mechanisms; Polymerization; Gas; Phase; Clusters

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. El-Shall of the Virginia Commonwealth University will conduct research on the mechanisms, structures, and kinetics of the early stages of cationic, radical, and metal catalyzed radical polymerization in the gas phase, in clusters, and on nanoparticle surfaces. The proposed work has three objectives: 1) to determine the structures of growing oligomers in the gas phase and in clusters, and of bulk polymers on the surfaces of nanoparticle catalysts; 2) to characterize the mechanisms, reactivity, kinetics, and temperature dependencies of polymerization and copolymerization reactions in the gas phase and in clusters; and 3) to investigate the mechanisms of metal-catalyzed polymerization, to characterize the metal-ion-organic intermediates, and to explore the design of efficient nanoparticle catalysts for better control of the polymerization products including metal/polymer nanocomposites. Graduate and undergraduate students will participate in this research. Teaching and research will be integrated in the university's chemistry curriculum, and a rich outreach program will include teachers and students in the K-12 levels.

在该项目中，由化学部实验物理化学项目资助，弗吉尼亚联邦大学的El-Shall教授将针对阳离子、自由基和金属催化自由基的早期阶段的机理、结构和动力学进行研究气相聚合、簇聚合和纳米颗粒表面聚合。拟议的工作有三个目标：1）确定气相和簇中生长的低聚物的结构，以及纳米颗粒催化剂表面上本体聚合物的结构； 2) 表征气相和团簇中聚合和共聚反应的机理、反应性、动力学和温度依赖性； 3）研究金属催化聚合的机理，表征金属-离子-有机中间体，并探索高效纳米粒子催化剂的设计，以更好地控制包括金属/聚合物纳米复合材料在内的聚合产物。 研究生和本科生将参与这项研究。教学和研究将整合到大学的化学课程中，丰富的外展计划将包括 K-12 年级的教师和学生。