Assembly of Debranched Xylan from Solution and on Nanocellulosic Surfaces
Journal article, 2014

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.

CARBOHYDRATE RESEARCH

CHROMATOGRAPHY

CORN COB XYLAN

NANOPARTICLES

V29

ARABINOXYLAN FILMS

A ICM

SOFTWOOD PULP

1973

SUBSTITUTION

ADSORPTION

STRENGTH PROPERTIES

CELLULOSE

BARRIER FILMS

P363

Author

Toon Bosmans

Chalmers, Chemical and Biological Engineering, Polymer Technology

Agnes Stépán

Chalmers, Chemical and Biological Engineering, Polymer Technology

Guillermo Toriz Gonzalez

Chalmers, Chemical and Biological Engineering, Polymer Technology

S. Renneckar

Virginia Polytechnic Institute and State University

E. Karabulut

Royal Institute of Technology (KTH)

L. Wagberg

Royal Institute of Technology (KTH)

Paul Gatenholm

Chalmers, Chemical and Biological Engineering, Polymer Technology

Wallenberg Wood Science Center (WWSC)

Biomacromolecules

1525-7797 (ISSN) 1526-4602 (eISSN)

Vol. 15 3 924-930

Subject Categories

Chemical Engineering

Polymer Technologies

DOI

10.1021/bm4017868

More information

Latest update

8/24/2018