Synthetic tannins structure by MALDI-TOF mass spectroscopy
Date
2009
Authors
Giovando S.
Pizzi A.
Pasch H.
Rode K.
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Abstract
The structure, polymeric nature, and oligomers distribution of six types of commercial synthetic tannins (syntans) were determined by MALDI-TOF mass spectrometry. The syntans examined were: (i) polyconden-sation oligomers of sulfonated phenol and 4,40-dioxydiphe-nylsulfone with formaldehyde and sodium bisulfite; (ii) sodium salts of polycondensation oligomers of phenol and sulfonated phenol with formaldehyde and urea; (iii) sodium salts of polycondensation oligomers of sulfonated phenol with formaldehyde and urea; (iv) sodium and ammonium salts of polycondensation oligomers of sulfonated naphta-lene with formaldehyde; and (v) a sulfonated phenolic novolak resin. The oligomers distribution indicated that the relative abundance of oligomers from trimer to higher degrees of polymerization varied from 70% to more than 90% according to the different syntans tested. © 2009 Wiley Periodicals, Inc.
Description
Keywords
Ammonium salt, Higher-degree, MALDI, MALDI-TOF mass spectrometry, MALDI-TOF mass spectroscopy, Novolak resin, Relative abundance, Sodium bisulfite, Sodium salt, Structure, Syntans, Tannins, Ammonium compounds, Formaldehyde, Mass spectrometers, Mass spectrometry, Metabolism, Oligomers, Phenols, Polycondensation, Polymers, Resins, Salts, Sulfur compounds, Urea, Urea formaldehyde resins, Phenolic resins, condensation, formaldehyde, oligomer, polymerization, resin, structural property
Citation
Journal of Applied Polymer Science
114
2
114
2