Flow Behavior of AB and ABC Block Copolymers: from Nanostructure to Macrostructure

摘要9729443将利用主要研究者开发的流变光学方法、X射线光谱和透射电子显微镜来研究AB二嵌段和ABC型共聚物的微观流变学和流动诱导微结构。本研究的重点是嵌段共聚物在简单剪切下的流动取向特性与其性能之间的关系。第二个目标是通过改变被测共聚物的基团并包括新合成的用于测试的两嵌段和三嵌段共聚物来识别新的微观结构现象。共聚物的合成将与宝洁公司合作进行。发现嵌段共聚物的流动行为范围，并建立预测能力来指导材料的加工性能和功能设计，将为合理设计分子结构以优化纳米结构聚合物的材料性能提供科学依据。***

Abstract 9729443 J. Kornfield, California Institute of Technology The micro-rheology and flow-induced microstructure of AB diblock and ABC-type copolymers will be investigated using a rheo-optic method developed by the principal investigator, as well as X-ray spectroscopy and transmission electron microscopy. The emphasis of this study is on the relationship between the flow alignment characteristics of block copolymers in simple shear and their properties. A second objective is identification of new microstructural phenomena by changing the group of tested copolymers and including newly synthesized diblock and triblock copolymers for testing. Synthesis of the copolymers will be performed in collaboration with The Procter & Gamble Company. Discovery of the range of flow behavior of block copolymers and establishment of predictive capabilities to guide design of materials for processability and function will provide the scientific basis for rational design of molecular architecture that optimize the materials properties of nanostructured polymers. ***