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

摘要9729443 J. Kornfield，加州理工学院AB二嵌段和ABC型共聚物的微观流变学和流动诱导微观结构将使用主要研究者开发的流变光学方法以及X射线光谱和透射电子显微镜进行研究。 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。 第二个目的是通过改变测试共聚物的组并包括新合成的二嵌段和三嵌段共聚物进行测试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以指导材料的加工性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. ***