The Physical Chemistry of Living Polymer Solutions

活性聚合物溶液的物理化学

• 批准号: 9619565
• 负责人: Sandra Greer
• 金额: $ 30.88万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9619565&HistoricalAwards=false
• 关键词: Physical; Chemistry; Living; Polymer; Solutions

In this project in the Physical Chemistry Program of the Chemistry Division Sandra Greer of the Department of Chemical Engineering of the University of Maryland- College Park will continue her research on the nature of the phase transitions of polymers and equilibrium reversible polymerization, in which the monomers undergo a reversible chemical reaction to form polymers. In this project microscopic and macroscopic experimental methods will be used to study the energy changes, the structural changes, and the details of the approach to equilibrium near the critical point. The microscopic studies will use neutron scattering to investigate the structure of the solutions and the motion of the polymers in them. The macroscopic studies will include measurements of equilibrium properties such as density, heat capacity, phase diagrams, kinetic rate constants and transport properties such as viscosity. These studies in reversible polymerization are of relevance for understanding the mechanism of polymer formation in systems of technological and biological interest.

在这个化学系物理化学项目中，马里兰大学帕克分校化学工程系的 Sandra Greer 将继续研究聚合物相变的性质和平衡可逆聚合，其中单体经历可逆化学反应形成聚合物。在这个项目中，微观和宏观实验方法将用于研究能量变化、结构变化以及临界点附近达到平衡的细节。 微观研究将利用中子散射来研究溶液的结构以及溶液中聚合物的运动。宏观研究将包括密度、热容、相图、动力学速率常数等平衡特性和粘度等传输特性的测量。 这些可逆聚合研究对于理解具有技术和生物学意义的系统中聚合物形成的机制具有重要意义。