Determination of polymer molecular weight and composition using picoSpin NMR spectroscopy

APPLICATION NOTE Authors: Katherine Paulsen and Daniel Frasco, Thermo Fisher Scientific, Madison, WI, USA Yufeng Zhu, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, USA Key words picoSpin 80, NMR, polymerization, copolymer, number of repeating units,…

Petrochemical Application of Low Field Benchtop NMR: Characterization of Polyols and Epoxy Resins Gulf Coast Conference – October 2014 Katherine M. Paulsen, Ph.D. October 14, 2014 The world leader in serving science 1 Overview of Petrochemical Industry http://en.wikipedia.org/wiki/Petrochemical 2 Opportunity…

MASS SPECTROMETRY FOR POLYMERS Benefits and analytical considerations for MS analysis of polymers The benefit of mass spectrometry is the ability to make absolute mass measurements at a molecular level rather than an average across a whole sample, making mixtures…

APPLICATION NOTE AN52327 Measuring the equilibrium constant of a keto-enol tautomerism using benchtop NMR Author Abstract Dean Antic, Thermo Fisher Scientific, Boulder, CO, USA The 1H NMR spectrum of a β-ketoester, ethyl acetoacetate, reveals the presence of tautomerism, a dynamic…