U.S.-Federal Republic of Germany Cooperative Research: On- line Characterization of Crystallization in the Cast Film Extrusion of Homopolymers and Their Blends

美德合作研究：均聚物及其共混物流延薄膜挤出结晶的在线表征

• 批准号: 8617065
• 负责人: James White
• 金额: $ 0.8万
• 依托单位: University of Akron
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-01 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8617065&HistoricalAwards=false
• 关键词: U.S.; Federal; Republic; Germany; Cooperative

This award will support collaborative research between Professors James L. White and Mukerrem Cakmak, University of Akron, and Professor Hans G. Zachmann, University of Hamburg, Federal Republic of Germany. They will study semicrystalline polymers undergoing stress-induced crystallization. They will examine the phase transitions and the reasons for the transitions in various thermotropic liquid crystal polymers. Their materials will be carefully chosen blends of polymers that are either miscible or immiscible with each other. One reason for selecting the particular materials is their potential commercial importance. The primary purpose of the research is to learn about the fundamental structures of the liquid crystalline polymers and their blends and the sources and actions of the phase transitions of these materials. The U.S. researchers will prepare the test materials and study them during melt-spinning to obtain preliminary optical and thermal measurements. In Germany, the researchers will use the HASYLAB synchrotron as an x-ray source for small-angle scattering measurements. The project will benefit from the competence of the investigators and their history of successful collaborations. Professors White and Cakmak are experts in polymer engineering and Professor Zachmann is a highly regarded polymer physicist.

该奖项将支持阿克伦大学的James L. White和Mukerrem Cakmak教授以及德意志联邦共和国汉堡大学的Hans G. Zachmann教授之间的合作研究。他们将研究经受应力诱导结晶的半结晶聚合物。他们将研究各种热致液晶聚合物的相变和相变的原因。他们的材料将是精心挑选的聚合物混合物，这些聚合物要么相互混溶，要么相互不混溶。选择这种特殊材料的一个原因是它们潜在的商业重要性。本研究的主要目的是了解液晶聚合物及其共混物的基本结构，以及这些材料相变的来源和作用。美国研究人员将准备测试材料，并在熔融纺丝过程中对其进行研究，以获得初步的光学和热测量结果。在德国，研究人员将使用HASYLAB同步加速器作为x射线源进行小角度散射测量。该项目将受益于研究人员的能力和他们成功合作的历史。White教授和Cakmak教授是聚合物工程方面的专家，Zachmann教授是一位备受尊敬的聚合物物理学家。