Characterization of oligomers in poly(ethylene terephthalate) by matrix‐assisted laser desorption/ionization mass spectrometry
- 1 January 1995
- journal article
- research article
- Published by Wiley in Rapid Communications in Mass Spectrometry
- Vol. 9 (8) , 697-702
- https://doi.org/10.1002/rcm.1290090813
Abstract
Matrix‐assisted laser desorption/ionization mass spectrometry was used for the characterization of extracted and synthesized oligo(ethylene terephthalate)s. Generally, cyclic oligomers [GT]n could be found in technical yarns and tiles, whereas our synthesized model oligomers mainly consisted of linear chains H[GT]nG. In addition, some other distributions could be identified as H[GT]nOH and H[GGT]1[GT]n−1G linear oligomers and H[GGT]1[GT]n−1 cyclic oligomers, where G is an ethylene glycol unit, GG is a diethylene glycol unit, caused by impurities of ethylene glycol, and T is a terephthalic acid unit. NMR and IR investigations were carried out to verify these results.Keywords
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