Segmental Orientation, Rotational Isomerization, Strain- Induced Crystallization, and Ultimate Properties of Elastomers-U.S.-Turkey Cooperative Research.

弹性体的链段取向、旋转异构化、应变诱导结晶和最终性能——美国-土耳其合作研究。

• 批准号: 8903327
• 负责人: James Mark
• 金额: --
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-15 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8903327&HistoricalAwards=false
• 关键词: Segmental; Orientation; Rotational; Isomerization; Strain

Abstract Narrative Description: This project supports the collaboration of Dr. James E. Mark, Director of Polymer Research Center, University of Cincinnati and Drs. Burak Erman and Ivet Bahar of the Polymer Research Center, Bogazici University, Istanbul, Turkey. The research is to study polymer chains of short length arranged in networks under very high levels of deforming forces. Observations of particular interest will be to determine the segmental orientation, preferential orientation and the rotational changes of the polymers, particularly the crystallization of materials under large strain loads causing rupture. This study is intended to develop a molecular understanding of the ultimate properties of elastic materials, and the use of such information in the design of better high-performance materials. Scope: This proposal is a real opportunity for the two Turkish co-principal investigators to begin to establish an active research group working in polymers at Bogazici University. Such a research group is a needed addition to the University, which is experiencing a growth in the number of highly capable undergraduate students. These students are selected from the top 1% of the 500,000 high school students examined annually in nationwide central examination. Bogazici University is modeled on the U.S. university system and conducts its courses in English, which makes is popular with those students hoping to take higher degrees outside of Turkey. There is a growing interest in polymers in Turkey spurred by a rapid growth in Turkish production of polymeric systems. This proposal fulfills an objective of the Science and Developing Countries Program through the exchange and transfer of scientific knowledge.

摘要描述：该项目支持辛辛那提大学聚合物研究中心主任James E.Mark博士与土耳其伊斯坦布尔Bogazici大学聚合物研究中心的Burak Erman博士和Ivet Bahar博士的合作。这项研究是为了研究在非常高的变形力水平下排列在网络中的短长度聚合物链。特别感兴趣的观察将是确定聚合物的链段取向、择优取向和旋转变化，特别是材料在导致断裂的大应变载荷下的结晶。这项研究旨在发展对弹性材料的最终性质的分子理解，并将这些信息用于设计更好的高性能材料。范围：这项提议对两位土耳其联合首席研究员来说是一个真正的机会，可以开始在Bogazici大学建立一个活跃的聚合物研究小组。这样一个研究小组是该大学的必要补充，该大学正在经历高能力本科生数量的增长。这些学生是从全国每年中考的50万高中生中挑选出来的前1%的学生。Bogazici大学效仿美国的大学体系，用英语授课，这使得它很受那些希望在土耳其以外获得更高学位的学生的欢迎。由于土耳其聚合体系产量的快速增长，土耳其对聚合物的兴趣与日俱增。这项建议通过科学知识的交流和转让实现了科学与发展中国家计划的目标。