Our research seeks to advance the understanding and control of
polymeric materials under flow through the use and development of
advanced measurement technology. The motivation behind our effort
is two-fold:
At a basic level, if one can conduct fundamental measurements of
important phenomenon that occur during flow or processing, then
one can achieve a deeper understanding of how to control the flow
and the properties of the final product.
One example of this approach is our research into extrusion instabilities,
where we are carrying out a detailed study of the flow fields that
underlie the instability known as sharkskin. A second example is
our investigation of the effects of confinement on the development
of structure in sheared polymer blends.
At a more applied level, polymer
processors suffer from limited real-time information regarding critical
properties of polymeric materials during processing operations such
as extrusion or injection molding. The ability to measure these critical
parameters (such as temperature, composition, orientation) would enable
real time control that would lead to higher product quality and reduced
waste. This is the philosophy behind our projects to conduct measure
composition through an on-line dielectric spectroscopy apparatus.
We are also heavily involved in the use of fluorescence as a probe
to conduct on-line measurements of temperature and material orientation.
Many of our projects are conducted
in collaboration with industrial partners, which range in size from
start-up companies to large multi-national corporations.