Events

Description:

"Temperature Modulated DSC Study of Complex Systems and the Role of Water in Meta-Stable (Polymorphic) Transitions"
        Jürgen E. K. Schawe
       Mettler-Toledo, Schwerzenbach, Switzerland
       Thursday, July 27, Michael's at Shoreline Park, Mountain View

        Abstract:
Meta-stable phases can occur in systems with a complex molecular structure which strongly influences the molecular rearrangements.  Consequently, orientation processes, like crystallization, becomes kinetically hindered and superheating or super-cooling of locale equilibrium states takes place during heating or cooling processes. Typical examples for materials which show such a behavior are polymers, polymorphic low molecular organic material and aqueous systems. The reason for meta-stable phases in aqueous systems is the formation of non-equilibrated molecular association due to hydrogen bounds.

Features and limits of conventional and temperature modulated DSC for the analysis of meta-stable phase transitions in complex systems are discussed on the example of polymeric systems, pharmaceuticals and aqueous systems. Demonstrate how the combination of a quantitative conventional DSC analysis and dedicated temperature modulated measurements can be used for the analysis of the kinetics of reorientation processes, the detection and analysis of polymorphic phases and the identification of molecular association. 

       Speaker Background:
Dr. Schawe received his Ph.D. in solid state physics and has worked at the Department of Polymer Physics at the Pedagogical University of Güstrow, the Faculty of Physics at the University of Rostock, and the Section of Calorimetry of the University Ulm before joining Mettler-Toledo in 1999.  His main fields of interest are thermal analysis techniques, temperature modulated techniques,
dynamic mechanical analysis, relaxation processes, the interaction between physical processes and chemical reactions, and meta-stable behavior in complex systems.  He has 53 publications and four patents, and the GGPF is pleased to have him visit us during his trip to the U.S. for the Colorado Calorimetry conference and the annual NATAS meeting.

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PRACTICAL DETAILS
DATE:         Thursday, July 27 

Location:        Michael's Restaurant at Shoreline Park, Mountain View
                See directions below.
Timing:  6 PM  social hour
               7 PM  dinner
               8 PM  lecture

Cost:              $30 with advance registration
               Half price for students, retired, and unemployed.
               Free if you attend just the lecture at 8PM.
                                (but please let us know for headcount)
               $35 after registration deadline, if possible.  

DIRECTIONS to Michael's at Shoreline Park:

Restaurant's web page directions
http://www.michaelsatshoreline.com/location/index.html#directions
From 101 in Mountain View, take the Shoreline Boulevard
Exit toward the Bay. Drive past the Shoreline Amphitheater
and go straight ahead, entering into Shoreline Park.  After
a mile or so inside the park, a sign for Michael's will
direct you to turn left into the parking lot for Michael's
Restaurant.

Address: 2960 N Shoreline Blvd.
Restaurant phone: 650-962-1014
Do NOT call restaurant for reservations.

PLEASE NOTE:  we accept cash or checks, but are unable to
accept payment by credit card at this time.
Deadline for registration:    5 PM Tuesday July 25.

Please register on the web site
       www.GGPF.org
        see detailed directions below

Or, contact:  
               Len Radzilowksi
                lradzilo@tycoelectronics.com
               650-361-3264

You should receive confirmation of your registration; if not, please contact us again.

PLEASE SPECIFY YOUR DINNER SELECTION, NAME, EMAIL ADDRESS, AND AFFILIATION

Dinner choices (pick one when registering):        
               Broiled salmon, lemon beurre blanc
               Breast of chicken, Marsala
               Grilled polenta & vegetable Napoleon

Note that we must request that you be liable for your
registration fee if you register and do not attend;
cancellation is allowed up to the registration deadline.