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posted by E. James Schermerhorn
Welcome back to our fall meetings! Due to a scheduling conflict and the holiday, we were unable to hold a September meeting. However, our next 2 meetings for the fall are set, and we are excited to announce our next Section Meeting for 2018 will take place on Wednesday, October 17, at RPI. The meeting will take place in the CBIS Auditorium and lobby. The abstract and additional biographical information of our speaker are included below.
Dr. Andre Striegel from NIST
Multi-detector Hydrodynamic Chromatography of Colloids and Polymers
Hydrodynamic chromatography (HDC) is a liquid chromatographic technique that separates analytes on the basis of their size in solution. HDC can be performed in an open tube (capillary) or in a packed column. In the latter case, the column packing material should be inert and either non-porous or of a pore size substantially smaller than the solution size of the analyte.
The "holy grail" of particle sizing can be regarded as the accurate and precise determination of the particle size averages and distribution of a sample that is disperse in size, shape, structure, and chemistry, along with the determination of the averages, distributions, and mutual-interdependences of all these properties. While no single analytical technique will be able to provide all of these for every sample type, multi-detector HDC has demonstrated the ability to measure a number of these properties for a variety of samples. Advantages of HDC, vis-à-vis size-exclusion chromatography or flow field-flow fractionation, include its being gentler than the former (thus minimizing the possibility of on-column, flow-induced analyte degradation) and more affordable and easily implementable than the latter.
Using examples from the recent literature, this talk will focus on the use of packed-column HDC for characterizing colloidal particle and ultra-high molar mass (M >> 1 million g/mol) polymer size, shape, molar mass, and structure, by combining the information obtained from detection methods such as refractometry, viscometry, and light scattering (both dynamic and static).
André Striegel received his Ph.D. in Analytical Chemistry in 1996 and his BS in Chemistry in 1991, both from the University of New Orleans. From 1996 to 1998 he performed postdoctoral research for the U.S. Department of Agriculture, at the National Center for Agricultural Utilization Research. For the next six years he worked for Solutia (now Eastman Chemical), at their Springfield, Massachusetts R&D center, first in the Physical & Analytical Sciences Center and then in Films R&D, achieving the rank of Research Specialist. From 2004 to 2011 he was Assistant Professor of both Analytical and Materials Chemistry in the Department of Chemistry & Biochemistry at Florida State University (FSU). In September 2011 he joined the National Institute of Standards & Technology (NIST), where he is a Research Chemist in the Chemical Sciences Division of the Material Measurement Laboratory. His research interests are in the area of polymer characterization, in particular applying separation science to determining structure-property relations of complex macromolecules, and in the fundamental aspects of separation and detection methods. He has received the Eli Lilly Analytical Chemistry Grantee Award, the inaugural ACS-DAC Award for Young Investigators in Separation Science, and an FSU First Year Assistant Professor Award. He also received a Solutia Technical Achievement Award for his research in private industry, and served as inaugural Professor in Residence for Preservation Research and Testing at the U.S. Library of Congress. He is the author of nearly 80 peer-reviewed publications, lead co-author of the second edition of "Modern Size-Exclusion Liquid Chromatography" and editor of the book "Multiple Detection in Size-Exclusion Chromatography." From 2010 to 2015, he was associate editor of the Encyclopedia of Analytical Chemistry, and is a member of the editorial board of various polymer science and analytical chemistry journals. In 2015, he became editor of Chromatographia.
RPI Center for Biotechnology and Interdisciplinary Studies (CBIS)
1623 15th Street
Troy, NY 12180
5:30 - 6:30 – Social Hour and Networking with cash bar
6:30 - 7:30 -- Dinner in CBIS Auditorium Lobby
7:30 - 8:00 -- Business Meeting
8:00 - 9:00 -- Presentation by Dr. Andre Striegel, NIST
Buffet dinner featuring:
- Rolls & Butter
- House salad with dressing
- Chicken Parmesan
- Beef Meatballs & Marinara
- Vegetarian Lasagna
- Penne Pasta with Marinara & Vodka sauce
- Sauteed green & yellow squash
- Assorted Italian pastries and cookies for dessert
Please make reservations and online payment by Monday, October 15, 2018 at the online registration page Click here
Please note that pre-registration is required. ENY-ACS events are cashless – payment must be made online during registration (preferred) or by check at the event.
$25 for employed attendee
$15 for graduate students
$10 undergraduates, retirees and unemployed attendees