MSE Seminar Series: Andrey Dobrynin

Friday, November 9, 2012
1:00 p.m.-2:00 p.m.
Room 2108 Chemical and Nuclear Engineering Bldg.
JoAnne Kagle
301 405 5240
jkagle@umd.edu

Electrostatic Interactions in Polymers and Soft Matter

Andrey Dobrynin
Institute of Materials Science and Department of Physics
University of Connecticut

Electrostatic interactions between macroions play an important role in different areas ranging from materials science to biophysics. They are main driving forces behind layer-by-layer assembly technique that allows fabrication of multilayer films from synthetic polyelectrolytes, DNA, proteins and nanoparticles. They are responsible for the extremely low fiction coefficient between biological surfaces such as articular cartilage coatings. In this talk, using results of the molecular dynamics simulations and scaling analysis, I will show what effect electrostatic interactions have on a collapse of polyelectrolyte chain in a poor solvent conditions for the polymer backbone, on a layer-by-layer assembly of charged nanoparticles and polymers on porous substrates, and on friction and lubrication between brush covered surfaces.

Audience: Graduate  Faculty  Post-Docs 

 

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