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Titolo:
Application of an integrated matrix-assisted laser desorption/ionization time-of-flight, electrospray ionization mass spectrometry and tandem mass spectrometry approach to characterizing complex polyol mixtures
Autore:
Chen, R; Tseng, AM; Uhing, M; Li, L;
Indirizzi:
Univ Alberta, Dept Chem, Edmonton, AB, Canada Univ Alberta Edmonton AB Canada Alberta, Dept Chem, Edmonton, AB, Canada Nalco Chem Co, Naperville, IL 60563 USA Nalco Chem Co Naperville IL USA 60563 o Chem Co, Naperville, IL 60563 USA
Titolo Testata:
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
fascicolo: 1, volume: 12, anno: 2001,
pagine: 55 - 60
SICI:
1044-0305(200101)12:1<55:AOAIML>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-WEIGHT DISTRIBUTIONS; COLLISION-INDUCED DISSOCIATION; DESORPTION IONIZATION; POLY(ETHYLENE GLYCOLS); SYNTHETIC-POLYMERS; POLYETHOXYLATE SURFACTANTS; SPECTRAL CHARACTERIZATION; SAMPLE PREPARATION; MALDI-FTMS; CHROMATOGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Li, L Univ Alberta, Dept Chem, Edmonton, AB, Canada Univ Alberta EdmontonAB Canada a, Dept Chem, Edmonton, AB, Canada
Citazione:
R. Chen et al., "Application of an integrated matrix-assisted laser desorption/ionization time-of-flight, electrospray ionization mass spectrometry and tandem mass spectrometry approach to characterizing complex polyol mixtures", J AM SOC M, 12(1), 2001, pp. 55-60

Abstract

Polyols are being used in a wide range of industrial applications including surfactants and precursors for grafted polymers. The characterization of polyols is of significance in correlating compositions and structures with their properties. We illustrate two real world examples where traditional analytical methods including GPC and NMR failed to reveal compositional differences, but the combination of matrix-assisted laser desorption/ionizationtime-of-flight (MALDI-TOF), electrospray ionization mass spectrometry (ESIMS), and MS/MS can produce compositional information required for problem solving. The first example involves failure analysis of four ethylene oxideand propylene oxide (EO/PO) copolymer products. The results from the mass spectrometry analysis unequivocally demonstrate that one of the samples hasa small variation incopolymer composition, leading to its abnormal activity. The second example is in the area of deformulation of complex polyol mixtures. Two samples displaying similar properties and activities were found to be two different polyol blends. One of the samples is a more rest-effective product. These examples demonstrate that MALDI, ESI MS, and MS/MS should be seriously considered as an integrated component of an overall polyol characterization program in product failure analysis and deformulation. (C) 2001 American Society for Mass Spectrometry.

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Documento generato il 07/07/20 alle ore 12:35:40