From forest residues to hydrophobic nanocomposites with high oxygen-barrier properties
2016 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 31, no 2, 261-269 p.Article in journal (Refereed) PublishedText
A biorefinery of forest resources should be able to convert all components of trees, including the bark and other types of forest residues, into value-added products. Here, non-cellulosic polysaccharides (NCPs) isolated from Norway spruce bark and cellulose nanocrystals (CNCs) isolated from the logging residues of Norway spruce were mixed to prepare nanocomposites with competitive thermo-mechanical properties. Polyepoxy acid (PEA) derived from a monomer of suberin in birch bark was used as a coating on the nanocomposites to develop functional materials entirely based on forest resources. All of the PEA-coated nanocomposites were hydrophobic. At 50% and 80% relative humidity, they showed high oxygen-barrier properties that were comparable to or even better than those of some renewable materials such as xylan-, galactoglucomannan- and nanofibrillated cellulose-based films and synthetic materials such as polyvinylidene chloride and polyamide.
Place, publisher, year, edition, pages
2016. Vol. 31, no 2, 261-269 p.
Biorefinery, Bark, Forest residue, Cellulose nanocrystal, Suberin
IdentifiersURN: urn:nbn:se:kth:diva-190530DOI: 10.3183/NPPRJ-2016-31-02-p261-269ISI: 000378442300012ScopusID: 2-s2.0-84977556451OAI: oai:DiVA.org:kth-190530DiVA: diva2:952932
QC 201608162016-08-162016-08-122016-08-16Bibliographically approved