title: Comprehensive analysis of the substituent distribution in hydroxyethyl celluloses by quantitative MALDI-ToF-MS.
abstract: 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).
authors.affiliation: TU Braunschweig, Institut für Lebensmittelchemie, Schleinitzstr. 20, D-38106 Braunschweig, Germany.
authors.forename: Roland
authors.initials: R
authors.lastname: Adden
authors.forename: Romy
authors.initials: R
authors.lastname: Müller
authors.forename: Gunnar
authors.initials: G
authors.lastname: Brinkmalm
authors.forename: Rudolf
authors.initials: R
authors.lastname: Ehrler
authors.forename: Petra
authors.initials: P
authors.lastname: Mischnick
mesh_terms: D002236:Carbohydrate Conformation; D002482:Cellulose / Q000032:analysis*; D013058:Mass Spectrometry; D015394:Molecular Structure; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D002482:Cellulose