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

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快递？X，x 6 X@`7 X@HP LaserJet 4(935-Mail)INTHP4-1.PRS x@\E X@2 0 F Z：9312046 Granick该奖项将支持Steve Granick教授之间的合作研究项目，伊利诺伊大学材料科学与工程系和日本京都大学聚合物化学系桥本武治教授。在为期七个月的访问期间，格兰尼克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。最近在溶液方面的工作涉及到一种单一的聚合物体系，即邻苯二甲酸二辛酯(DOP)中的聚苯乙烯，其中的散射效应很大。在这种现象中，成核的重要性没有引起足够的重视。除了关键成分之外，人们对系统知之甚少。研究人员将对不同静水压力下的浊度和粘弹性效应进行联合测量。这将包括在非常明确的剪切速率、压力和聚合物微结构条件下研究聚合物剪切诱导的分离。研究结果可望为液体非平衡结构和相研究的新方向奠定基础。它还将有助于极大地扩展教学课程。格兰尼克教授是表面大分子动力学领域的领军人物。桥本教授被誉为日本最优秀的聚合物实验科学家S之一，在他所在的领域也享誉全球。桥本教授花了多年时间开发将用于这项研究的独特的专门设备。研究人员的意图是，通过在彼此的实验室交换研究生，他们将继续合作多年。该项目得到了NSF CGP(全球伙伴关系中心)科学奖学金计划的支持。H)0*0*0*

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*