The characterization of chemical heterogeneities over the molar mass distribution of copolymers is challenging but crucial to the development of novel materials. A variety of methods have been developed to study these heterogeneities, mostly relying on the coupling of detectors which offer chemical information to molar mass separations by size-exclusion chromatography (SEC). Pyrolysis-gas chromatography (Py-GC), in theory, features excellent sensitivity and resolution, but has seen little application as a chemical detector in SEC. In this lecture, we cover the development of an SEC-Py-GC-MS and SEC-Py-FID/MS analysis methods for copolymers, yielding sequence and chemical composition information over the molar mass distribution.
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