Arabinoxylan/nanofibrillated cellulose composite films
Artikel i vetenskaplig tidskrift, 2012

There is an increasing interest in substituting petroleum based polymer films, for food packaging applications, with films based on renewable resources. In many of these applications, low oxygen permeability and low moisture uptake of films are required, as well as high enough strength and flexibility. For this purpose, rye arabinoxylan films reinforced with nanofibrillated cellulose was prepared and evaluated. A thorough mixing of the components resulted in uniform films. Mechanical, thermal, structural, moisture sorption and oxygen barrier characteristics of such films are reported here. Reinforcement of arabinoxylan with nanofibrillated cellulose affected the properties of the films positively. A decrease in moisture sorption of the films, as well as an increase in stiffness, strength and flexibility of the films were shown. From these results and dynamic FTIR spectra, a strong coupling between reinforcing cellulose and arabinoxylan matrix was concluded. Oxygen barrier properties were equal or better as compared to the neat rye arabinoxylan film. In general, the high nanofibrillated cellulose containing composite film, i.e. 75 % NFC, showed the best properties.

spectroscopy

ftir

xylans

arabinoxylans

high toughness

polysaccharides

water

hemicelluloses

Författare

J. S. Stevanic

Kungliga Tekniska Högskolan (KTH)

Innventia

Elina Mabasa Bergström

Chalmers, Kemi- och bioteknik

Paul Gatenholm

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi- och bioteknik, Polymerteknologi

L. Berglund

Kungliga Tekniska Högskolan (KTH)

L. Salmen

Innventia

Kungliga Tekniska Högskolan (KTH)

Journal of Materials Science

0022-2461 (ISSN) 1573-4803 (eISSN)

Vol. 47 18 6724-6732

Ämneskategorier

Materialteknik

DOI

10.1007/s10853-012-6615-8