Comprehensive Analysis of the Substituent Distribution in Hydroxyethyl Celluloses by Quantitative MALDI-ToF-MS

Three HECs with a high MS (HEC 1: 1.89, HEC 2: 1.94, HEC 3: 3.03) were analyzed with respect to their substituent distribution and tandem reaction in the glucosyl unit by GLC of the corresponding glucitol acetates, and along the polymer chain by MALDI‐ToF‐MS after a multi‐step sample preparation. Fo...

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Veröffentlicht in:	Macromolecular bioscience 2006-06, Vol.6 (6), p.435-444
Hauptverfasser:	Adden, Roland, Müller, Romy, Brinkmalm, Gunnar, Ehrler, Rudolf, Mischnick, Petra
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Carbohydrate Conformation Cellulose - analysis Cellulose and derivatives cellulose ether Exact sciences and technology heterogeneity of first and second order hydroxyethyl cellulose Mass Spectrometry Molecular Structure Natural polymers Physicochemistry of polymers quantitative mass spectrometry Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization substituent distribution
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Zusammenfassung:	Three HECs with a high MS (HEC 1: 1.89, HEC 2: 1.94, HEC 3: 3.03) were analyzed with respect to their substituent distribution and tandem reaction in the glucosyl unit by GLC of the corresponding glucitol acetates, and along the polymer chain by MALDI‐ToF‐MS after a multi‐step sample preparation. For comparison of the experimental data with a random pattern an extended Bernoulli plot was applied to calculate a random distribution for the composition of un‐, mono‐, di‐, tri‐, and up to heptasubstituted glucosyl units (c0, c1, c2, … c7).
ISSN:	1616-5187 1616-5195
DOI:	10.1002/mabi.200600028