NSF-CGP Science Fellowship Program: Viscoelastic Effects on Polymer Phase Separation Processes

NSF-CGP 科学奖学金计划：聚合物相分离过程的粘弹性效应

• 批准号: 9312046
• 负责人: Steve Granick
• 金额: $ 7.56万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-12-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312046&HistoricalAwards=false
• 关键词: NSF; CGP; Science; Fellowship; Program

WPC 2 B J Z Courier #| x 2 x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 6 F V N Z #| x Courier ? x x x , x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 0 F Z : 9312046 Granick This award will support a cooperative research project between Professor Steve Granick, Department of Materials Science and Engineering, University of Illinois, and Professor Takeji Hashimoto, Department of Polymer Chemistry, Kyoto University in Japan. During a seven month visit Professor Granick will conduct research on the viscoelastic effects on polymer phase separation processes specifically on the nucleation and growth mechanism. Recent work in solutions has concerned a single polymer system, polystyrene in dioctylphthalate (DOP) in which the scattering effects are large. In such phenomena, not enough attention has been paid to the possible importance of nucleation. Little is known about systems away from the critical composition. The researchers will undertake joint measurement of turbidity and viscoelastic effects at various hydrostatic pressures. This will involve investigation of polymer polymer shear induced demixing under extremely well defined conditions of shear rate, pressure, and polymer microstructure. Results of the research are expected to lay the groundwork for new directions in nonequilibrium structure and phases of liquids research. It will also contribute to a greatly expanded teaching curriculum. Professor Granick is a leading researcher in the area of dynamics of macromolecules on surfaces. Professor Hashimato has a reputation as being one of the best experimental polymer scientist s in Japan and has also developed a worldwide reputation in his area. Professor Hashimoto has spent many years developing the unique specialized equipment that will be used in the research. It is the intent of the researchers that they will continue their collaboration for many years through the exchange of graduate students in each other's laboratories. This project is supported by the NSF CGP (Center for Global Partnership) Science Fellowship Program. h) 0*0*0*

wpc2 B jz Courier #| x 2 x 6 x @ ' 7 x @ HP LaserJet 4 (935-Mail) INTHP4-1。PRS x @ \ E x @ 2 6 F V N Z #| x快递员？HP LaserJet 4 (935-Mail) INTHP4-1。该奖项将支持美国伊利诺伊大学材料科学与工程系Steve Granick教授与日本京都大学高分子化学系Takeji Hashimoto教授的合作研究项目。在为期7个月的访问中，Granick教授将研究粘弹性对聚合物相分离过程的影响，特别是成核和生长机制。最近对溶液的研究主要集中在一种单一的聚合物体系中，即聚苯乙烯-邻苯二甲酸二辛酯（DOP），它的散射效应很大。在这种现象中，对成核的可能重要性没有给予足够的注意。对于临界组分以外的系统，我们所知甚少。研究人员将在不同的静水压力下进行浊度和粘弹性效应的联合测量。这将涉及在剪切速率、压力和聚合物微观结构等非常明确的条件下，聚合物剪切诱导脱混的研究。研究结果有望为液体非平衡结构和相的研究开辟新的方向。它还将有助于大大扩展教学课程。Granick教授是表面大分子动力学领域的主要研究人员。桥下教授被认为是日本最好的实验聚合物科学家之一，在他的领域也享有世界声誉。桥本教授花了多年时间开发将用于研究的独特专用设备。这是研究人员的意图，他们将继续合作多年，通过研究生交换在对方的实验室。本项目由美国国家科学基金会（NSF） CGP （Center for Global Partnership）科学奖学金计划资助。h ) 0 * 0 * 0 *