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

摘要：本项目支持美国辛辛那提大学高分子研究中心主任James E. Mark博士和dr。Burak Erman和Ivet Bahar来自土耳其伊斯坦布尔Bogazici大学聚合物研究中心。这项研究是研究在非常高的变形力下排列成网络的短长度聚合物链。特别感兴趣的观察将是确定聚合物的节段取向、优先取向和旋转变化，特别是在大应变载荷下导致断裂的材料结晶。本研究旨在发展对弹性材料终极特性的分子理解，并将这些信息用于设计更好的高性能材料。范围：该提案是两个土耳其联合首席研究员开始在Bogazici大学建立一个活跃的聚合物研究小组的真正机会。这样一个研究小组是大学所需要的补充，因为大学正经历着高素质本科生数量的增长。这些学生是从每年参加全国统考的50万名高中生中选拔出来的前1%的学生。博加济奇大学以美国大学体系为蓝本，用英语授课，这使得那些希望在土耳其以外获得更高学位的学生很受欢迎。由于土耳其生产聚合物系统的快速增长，土耳其对聚合物的兴趣日益浓厚。这一建议通过科学知识的交流和转移实现了科学与发展中国家项目的一个目标。

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.