Characterization of Randomly Branched Polymers Utilizing Liquid Chromatography and Mass Spectrometry
作者： Jessica N. Hoskins , Jana Falkenhagen , Steffen M. Weidner
DOI: 10.1007/978-3-319-11340-1_14
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摘要: Branching in polymers is an important way to modify the materials properties, however characterization of random branching polymeric a challenge polymer analysis. In this work, liquid adsorption chromatography methods are developed for commercially available hyperbranched polyester (BoltornTM). This chromatographic techniques was then coupled offline MALDI-TOF MS analysis, first analysis randomly branched polymers. The coupling these two provides superior spectra, enabling easy identification structural subdistributons based on theoretical molecular weight. Detailed spectra shows that conditions separate cyclic Boltorn (with no core molecule) from non-cyclic molecule), and only architectures observed. MALDI also confirms separation mode adsorption, but further needed determine if there by degree branching.
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