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Preliminary matrix‐assisted laser desorption ionization time‐of‐flight and field desorption mass spectrometric analyses of polymeric methylene diphenylene diisocyanate, its amine precursor and a model polyether prepolymer
Author(s) -
Carr R. H.,
Jackson A. T.
Publication year - 1998
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19981230)12:24<2047::aid-rcm428>3.0.co;2-9
Subject(s) - chemistry , prepolymer , field desorption , mass spectrometry , desorption , mass spectrum , matrix assisted laser desorption/ionization , amine gas treating , analytical chemistry (journal) , methylene , matrix (chemical analysis) , ionization , ion , chromatography , polyurethane , organic chemistry , adsorption
Matrix‐assisted laser desorption/ionisation time‐of‐flight (MALDI‐TOF) mass spectrometric analyses have been undertaken on the polyaromatic polyisocyanate methylene diphenylene diisocyanate (MDI) and its amine precursor. These preliminary studies have shown that the MALDI‐TOF spectra are complicated by the presence of intense ion peaks which are additional to the species of interest. In comparison, the more experimentally demanding technique of field desorption mass spectrometry has produced spectra of superior quality and would appear to be the method of choice for continued development. A model poly(propylene glycol) based MDI prepolymer has been successfully examined using MALDI‐TOFMS, the expected series of peaks corresponding to the different PPG homologues being clearly observed with excellent signal‐to‐noise ratios in this experimentally convenient mass spectrometric technique. Copyright © 1998 John Wiley & Sons, Ltd.