Study of Structure and Dynamic Interactions in Dispersions of Particles in Liquid Crystalline Polymers

提案编号：9618777提案类型：研究者发起首席研究员Davide A. Hill Affiliation University of Notre Dome这项资助是通过化学和运输系统分部界面、传输和分离项目的分离和净化项目子元素授予的。首席研究员是诺特Game大学的Davide A. Hill。提出的研究目的是寻求通过插入具有定制形状和表面形貌的填充颗粒来改善液晶聚合物（lcp）机械性能的方法。尽管液晶聚合物具有出色的热、化学和介电性能，但在三维结构的生产中应用有限。这些材料的一个严重缺点是沿强分子排列的表面容易断裂。液晶聚合物在纺丝方向上具有较高的抗拉强度，但横向内聚力极弱。填充材料的引入可以锚定链并在液晶聚合物基体中形成所需的取向模式。粒子特性将选择工程材料与控制微观结构。这项研究的重要性在于，它有可能通过改善这些有用材料的机械性能来影响液晶聚合物的加工。这种机械性能的改进可能会开辟新的应用领域，包括用作分离介质。从基础的角度来看，该研究将促进对液晶聚合物动态相互作用和结构发展的理解。

ABSTRACT Proposal No: 9618777 Proposal Type: Investigator Initiated Principal Investigator Davide A. Hill Affiliation University of Notre Dome This grant is awarded through the Separations and Purification Program sub-element of the Interfacial, Transport and Separations Program of the Chemical and Transport Systems Division. The principal investigator is Davide A. Hill of the University of Notre Game. The objective of the proposed research is to seek methods for improving the mechanical properties of liquid crystal polymer(LCPs) by inserting filler particles with tailored shape and surface morphology. Despite their outstanding thermal, chemical and dielectric properties, liquid crystal polymers have found limited application for production of three-dimensional structures. A severe drawback of these materials is the ease of fracture along surfaces of strong molecular alignment. Liquid crystal polymers have high tensile strength in the spinning direction but extremely weak lateral cohesion. The introduction of filler material serves to anchor the chains and nucleate desirable orientation patterns in a liquid crystal polymer matrix. Particle characteristics will be selected to engineer materials with controlled microstructures. The importance of the research is its potential to influence the processing of liquid crystal polymers by improving the mechanical properties of these useful materials. Such improvement in mechanical properties may open up new areas of applications, including use as separations media. From a fundamental viewpoint, the research will advance the understanding of dynamic interactions and structure development in liquid crystal polymers.