U.S.-Malaysia Cooperative Research: Macromer Synthesis via Delocalized Carbanions

这项提案要求获得资金，以允许宾夕法尼亚州立大学聚合物科学系Bernard Gordon博士与马来亚大学化学系Seng Neon Gan博士继续通过非局域碳负离子进行大分子合成。他们的研究将涉及(1)通过阴离子引发制备新的大单体(具有反应性末端的聚合物)，(2)对氢化橡胶进行化学修饰以产生具有反应性末端的弹性碎片，以及(3)研究环氧化天然橡胶与各种大单体和阴离子引发制备的聚合物的反应。通过改变基础聚合物的性能，可以实现天然橡胶和合成橡胶传统用途的多样化。这可以通过直接化学反应改变结构或通过将其他聚合物嫁接到橡胶结构上来实现。该项目增加了国际合作的层面，国际和平研究所的研究在美国国家科学基金会补助金编号。DMR-8822938。甘博士在天然橡胶和合成橡胶方面的经验，以及之前与PI在大分子单体方面的合作，将为正在进行的研究增加一个有价值的新维度。该项目与发展中国家科学计划的目标相关，该计划旨在通过交流科学信息、思想、技能和技术以及通过在互惠互利的问题上进行合作来提高美国和发展中国家科学家和工程师之间的合作水平。

This proposal requests funds to permit Dr. Bernard Gordon, Department of Polymer Science, Pennsylvania State University, to pursue with Dr. Seng Neon Gan, Department of Chemistry, University of Malaya, macromer synthesis via delocalized carbanions. Their research will involve (1) preparing new macromers (polymers with a reactive terminal) by anionic initiation, (2) chemically modifying hydrogenated rubbers to produce elastic fragments with reactive terminals, and (3) investigating the reactions of epoxidized natural rubber with various macromers and polymers prepared by anionic initiation. Diversification of the traditional uses of natural and synthetic rubbers can be achieved by changing the properties of the base polymers. This can be done by direct chemical reactions to change the structures or by grafting other polymers onto the rubber structure. This project adds an international cooperative dimension to the PI's research under NSF Grant No. DMR-8822938. Dr. Gan's experience with natural and synthetic rubbers and prior collaboration with the PI on macromers will add a valuable new dimension to the ongoing research. This project is relevant to the objectives of the Science in Developing Countries Program which seeks to increase the level of cooperation between U.S. and developing country scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit.