Abstract
Mass spectrometry techniques, specifically matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) and electrospray ionization time-of-flight (ESI-TOF) are of considerable interest for characterizing very attractive polymers resulting from controlled radical polymerizations (CRP). This work proposes a systematic and experimental comparison of both ionization methods to analyze polystyrene prepared by five different CRP: nitroxide-mediated polymerization (mediated by N-tert-butyl-N-[1-diethylphosphono-(2,2-dimethylpropyl)]nitroxide, known as SG1), atom transfer radical polymerization (Cl- and Br-mediated), reversible addition-fragmentation chain transfer polymerization, and reverse iodine transfer polymerization. All polystyrene chain end-groups obtained in each CRP-polymerization, and detected by both mass spectrometry techniques, are described and discussed. Elemental analyses of all CRP-polymers were also carried out to complete these results. It was found that the number of chain end-gro...
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