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James A. Morrison Lecturer Seminar - Professor Frank S. Bates, University of Minnesota

Event Date: 
Tuesday, January 30, 2018 - 3:30pm to 4:30pm
Structure and Dynamics of Block Copolymer Micelles Block copolymers belong to a broad class of amphiphilic compounds that includes soaps, lipids and nonionic surfactants. These macromolecules assemble into micelles with molecular dimensions on the order of 5 to 50 nm in size when mixed with excess solvent that preferentially solvates one block type. Although the structural features displayed by amphiphilic block copolymers resemble those associated with the self-assembly of lipids and simple surfactants (e.g., spherical and cylindrical micelles and vesicles) a macromolecular architecture leads to remarkably different dynamic properties, linked to a vanishingly small critical micelle concentration. As a consequence, molecular exchange and equilibration are highly dependent on the molecular weight and molecular architecture. The fundamental thermodynamic and kinetic factors that control micelle shape, size and dynamics will be described based on static small-angle x-ray scattering (SAXS) and time-dependent small-neutron scattering (SANS) experiments and cryogenic transmission and scanning electron microscopy results. Frank S. Bates is a Regents Professor and a member of the Chemical Engineering and Materials Science department at the University of Minnesota. He received a B.S. in Mathematics from SUNY Albany in 1976, and M.S. and Sc.D. degrees in Chemical Engineering from MIT in 1979 and 1982. Between 1982 and 1989 Bates was a member of the technical staff at AT&T Bell Laboratories then joined the University of Minnesota as an Associate Professor. He was promoted to Professor in 1991, named a Distinguished McKnight University Professor in 1996, served as department Head from 1999 to 2014, and became a Regents Professor in 2007. Professor Bates conducts research on a range of topics related to polymers, with a particular focus on the thermodynamics and dynamics of block polymers and blends. In 1988 Bates was named a Distinguished Member of the Technical Staff at Bell Labs, in 1989 he received the John H. Dillon Medal and in 1997 the Polymer Physics Prize, both from the American Physical Society where he is a Fellow. He received the 2004 David Turnbull Lectureship Award from the Materials Research Society, shared the ACS Cooperative Research Award in 2008, was awarded the 2008 Sustained Research Prize by the Neutron Scattering Society of America and he was the 2012 Institute Lecturer of the American Institute of Chemical Engineers. Bates was elected to the US National Academy of Engineering in 2002 the American Academy of Arts & Sciences in 2010, and the US National Academy of Sciences in 2017.
Event Location: 
McMaster
Location Details: 
ABB-102