Charge-Directed Fiber Surface Modification by Molecular Assemblies of Functional Polysaccharides

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Beatriz Vega, Holger Wondraczek, Cíntia Salomão Pinto Zarth, Elina Heikkilä, Pedro Fardim, Thomas Heinze
Publisher: American Chemical Society
Publication year: 2013
Journal: Langmuir
Journal acronym: Langmuir
Volume number: 29
Issue number: 44
Start page: 13388
End page: 13395
eISSN: 1520-5827


Abstract

Molecular assemblies, namely, polyelectrolyte complexes (PECs) composed of negatively charged xylan-based derivatives and a novel positively charged cellulose derivative (CN+), were used for interfacial modification of wood fibers by charge directed self-assembly. The adsorption process was studied using polyelectrolyte titration and elemental analysis. X-ray spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used as advanced techniques for the characterization of the modified fiber surfaces. The measurements revealed an intense interaction between the pulp fibers and PECs, and provided essential information for a better understanding of the adsorption process. The information gathered on this paper might contribute to the basis for the development of new value added products by the use of underutilized biomass.


Keywords

Adsorption, Cationic cellulose derivatives, Cellulose, Hemicelluloses, photoelectron spectroscopy (XPS), polysaccharides, ToF-SIMS

Last updated on 2019-14-10 at 03:54