Studies of Monolayers of Glass-Forming Polymers

这项研究涉及形成玻璃的聚合物。 的技术 绝对体积法、差示扫描量热法和 朗缪尔单层槽研究将用于研究玻璃 形成聚合物。 膨胀法和差示扫描 量热法将用于检查散装玻璃。 这将 包括等压温度扫描以及体积恢复 等温线 同样的聚合物将被涂在朗缪尔 以在自由表面处形成玻璃状结构。 的 玻璃状单分子膜将使用类似的实验进行研究 批量研究。 测量将包括表面积与 恒定表面压力和表面压力下的时间等温线 在恒定施加的表面压力下的面积与温度的研究。 聚合物玻璃局限于表面的性质是 预计将在分子解释的玻璃 状态

This study involves polymers which form glasses. The techniques of absolute volume dilatometry, Differential Scanning Calorimetry, and Langmuir monolayer trough studies will be used to investigate glass forming polymers. Dilatometry and Differential Scanning Calorimetry will be used to examine the bulk glasses. This will involve isobaric temperature scans as well as volume recovery isotherms. The same polymers will then be spread on a Langmuir trough to form a glass-like structure at a free surface. The glass-like monolayers will be studied using analogous experiments to the bulk studies. Measurements will include surface area vs time isotherms at constant applied surface pressure and surface area vs temperature studies at constant applied surface pressure. The properties of polymer glasses confined to a surface are expected to be useful in a molecular interpretation of the glassy state.