Change search
ReferencesLink to record
Permanent link

Direct link
Assembly of Debranched Xylan from Solution and on Nanocellulosic Surfaces
Show others and affiliations
2014 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 15, no 3, 924-930 p.Article in journal (Refereed) Published
Abstract [en]

This study focused on the assembly characteristics of debranched xylan onto cellulose surfaces. A rye arabinoxylan polymer with an initial arabinose/xylose ratio of 0.53 was debranched with an oxalic acid treatment as a function of time. The resulting samples contained reduced arabinose/xylose ratios significantly affecting the molecular architecture and solution behavior of the biopolymer. With this treatment, an almost linear xylan with arabinose DS of only 0.04 was obtained. The removal of arabinose units resulted in the self-assembly of the debranched polymer in water into stable nanoparticle aggregates with a size around 300 nm with a gradual increase in crystallinity of the isolated xylan. Using quartz crystal microbalance with dissipation monitoring, the adsorption of xylan onto model cellulose surfaces was quantified. Compared to the nonmodified xylan, the adsorption of debranched xylan increased from 0.6 to 5.5 mg m(-2). Additionally, adsorption kinetics suggest that the nanoparticles rapidly adsorbed to the cellulose surfaces compared to the arabinoxylan. In summary, a control of the molecular structure of xylan influences its ability to form a new class of polysaccharide nanoparticles in aqueous suspensions and its interaction with nanocellulose surfaces.

Place, publisher, year, edition, pages
2014. Vol. 15, no 3, 924-930 p.
Keyword [en]
Adsorption kinetics, Aqueous suspensions, Cellulose surfaces, Function of time, Molecular architecture, Nanoparticle aggregate, Quartz crystal microbalance with dissipation monitoring, Solution behavior
National Category
Biochemistry and Molecular Biology Polymer Chemistry
URN: urn:nbn:se:kth:diva-144373DOI: 10.1021/bm4017868ISI: 000332756600026ScopusID: 2-s2.0-84896789006OAI: diva2:713275
Knut and Alice Wallenberg Foundation

QC 20140422

Available from: 2014-04-22 Created: 2014-04-22 Last updated: 2014-04-22Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Karabulut, ErdemWågberg, Lars
By organisation
Fibre TechnologyWallenberg Wood Science Center
In the same journal
Biochemistry and Molecular BiologyPolymer Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 166 hits
ReferencesLink to record
Permanent link

Direct link