报告人🐩🥺：Professor Gregory C. Rutledge (Lammot du Pont Professor,Department of Chemical Engineering Massachusetts Institute of Technology, Cambridge, MA. USA)
报告题目为：Crystallization and Semicrystalline Polyolefins: a Molecular Modeling Perspective
Abstract:The solid state properties of polyolefins are exquisitely sensitive to the molecular structure and chain-like nature of the molecules and to the organization of these chains into the semicrystalline morphology. These properties reflect both the kinetic nature of the crystallization phenomenon and the thermodynamic behavior of the resulting crystal/amorphous polymer composite. Description and modeling of polyolefin crystallization and semicrystalline solid properties with atomic level detail pose significant challenges for molecular simulation, due to the nonequilibrium nature of the structures and the broad spectrum of time scales involved with structural reorganization. Here we describe progress in the development of molecular simulations to illuminate these phenomena. Particular emphasis is placed on the nonequilibrium nature of the semicrystalline morphology and the consequences this holds for modeling the structure and mechanical properties of this material. The crystallization in polymers is characterized by rare event dynamics that control both the nucleation and growth of the crystal domains from the melt phase. Efforts to study these phenomena in short chain olefins, with potential for extension to longer chains and melts with flow-induced orientation, may also be discussed.
Introduction ofProfessor Gregory C. Rutledge
Ph.D., Massachusetts Institute of Technology, Chemical Engineering, 1990.
B.S., University of Virginia, Chemical Engineering, 1983 (summa cum laude).
Recent Honors and Awards:
Visiting Professor, Harvard University (2008). Lammot du Pont Professorship of Chemical Engineering(2007). Peter Anthony Leermakers Symposium Lecturer, Wesleyan University (2006). Fellow of theAmerican Physical Society (2005). H.A. Morton Distinguished Visiting Professor, Polymer Science,University of Akron (2000). OMNOVA Solutions Signature University Award (2000). Best Paper Award,Plastics Analysis Division of the Society of Plastics Engineers (1997). National Young Investigator,National Science Foundation (1994). 3M Innovation Award (1993). DuPont Young Faculty Award, E.I.DuPont de Nemours and Co. (1992). Texaco-Mangelsdorf Career Development Professorship (1991).
Areas of Research:Molecular engineering of soft condensed matter, Polymer science and engineering,Statistical mechanics and molecular simulation, Electrospinning and electrospun fibers.Author or co-author of over 200 papers in refereed journals, book chapters and archival conferenceproceedings, 150 invited lectures and 10 patent issued or applied for. Supervisor of 28 PhD, 8 MS/MEngstudents, 22 Postdoctoral Associates.
