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  5. End-group identification of structural isomeric polymers
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End-group identification of structural isomeric polymers

MALDI mass spectrometry provides highly specific chemical information for polymer structural analysis, copolymer composition, complex polymer mixtures, and surface imaging, making it invaluable in various polymer analysis applications. This technique is widely recognized for the characterization of synthetic polymer samples and is used to calculate average molecular weights and identify end-groups. In this application note, polyethylene glycol methacrylate, methyl ether acrylate, and diglycidyl ether, which are structural isomers with equal oligomer masses, were identified by MALDI-CID-MS/MS. End-group analysis by MS is based on the total mass of both end-groups, but MS/MS has the advantage of being able to identify each end-group individually.