April 2012 Meeting Announcement, Delaware Valley Mass Spectrometry Discussion Group
PLEASE NOTE: We will meet in Mendel 154.
- Topic: "Characterization of Polymeric Systems by Mass Spectrometry"
- Speaker:Dr. Tianlan Zhang, DOW Spring House
- Date: Monday, April 9, 2012. 6:30 PM
- Time: Social Hour: 6:30 PM.
Talk: 7:30 PM.
Please RSVP to Eric Manning firstname.lastname@example.org by Thursday April 5th.
- Place: Department of Chemistry, Villanova University (Room 154, Mendel Hall)
Synthetic Polymers are conventionally analyzed by NMR for average monomer composition and by SEC for MW distribution. Pyrolysis-GC/MS is often used to identify monomers and small additives in an unknown system. Obtaining structure/architecture of polymeric molecules and understanding the polymerization process is of great interest. This information can be used to correlate the polymer performance. This talk will focus on examples of how mass spectrometry complements NMR and SEC in the characterization of a complicated polymeric system for molecular structure and chemical composition. One topic of discussion will be the probing of the serum phase in more complicated emulsion polymerization systems by SEC/LC-MS as serum phase polymers play an important role in colloidal stability and in future film formation.
Tianlan Zhang is currently a Research Scientist in Analytical Sciences group of Core R&D at the Dow Chemical Company, where he has worked for the last 14 years. Prior to that, he was an application scientist in Bruker Daltonics. Tianlan received his BS/MS in Physics from Nankai University, and a Ph.D. degree in Physical Chemistry from University of Delaware under the supervision of Douglas Ridge. Most of his work now is focused on characterization of polymeric systems using various mass spec and separation technologies in support of numerous R&D programs in Advanced Material Division and Core R&D of the Dow Chemical.
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