Abstract
SummaryDue to the limited resolution of matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry, the assignment of binary‐copolymer composition to the peak molecular weight observed in the spectrum is not unique. Consequently, several clusters, called fingerprints, appear on calculated 2‐D distribution, but usually only one of them corresponds to the sample composition. The ambiguity in the assignment of the composition to peaks in mass spectra of binary copolymers was explained in the framework of number theory and several criteria for identification of the correct fingerprint were proposed. The results were applied in analysis of poly(propylene glycol)‐b‐poly(ethylene glycol)‐block‐poly(propylene glycol) triblock copolymer Reverse Pluronic 17R4.
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