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Electrospray and matrix-assisted laser desorption/ionization mass spectral characterization of linear single nylon-6 oligomers

✍ Scribed by Lu Shan; Renata Murgasova; David M. Hercules; Marwan Houalla

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
220 KB
Volume
36
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

Synthetic nylon‐6 single molecular mass oligomers were studied by matrix‐assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI) mass spectrometry. These oligomers, considered as model compounds for the study of nylon‐6 polymers, gave good mass spectrometric results using both MALDI and ESI. In spite of the gentle nature of both techniques, the MALDI and ESI spectra showed evidence of end‐group cleavage from the oligomer chains. MALDI‐MS was found to give similar fragmentation patterns for all of the oligomer samples. An increase in doubly charged ion signals with increasing oligomer mass was observed in the ESI mass spectra, as was end‐group fragmentation. Signals from oligomer clusters were observed in ESI‐MS for the dimer, tetramer and hexamer, most likely due to non‐covalent bonding among the low‐mass oligomer molecules. Copyright © 2001 John Wiley & Sons, Ltd.

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