Conceptual approach to renewable barrier film design based on wood hydrolysate
2011 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 12, no 4, 1355-1362 p.Article in journal (Refereed) Published
Biomass is converted to oxygen barriers through a conceptually unconventional approach involving the preservation of the biomass native interactions and macromolecular components and enhancing the effect by created interactions With a co-component. A combined calculation/assessment model is elaborated to understand, quantify, and predict which compositions that provide an intermolecular affinity high enough to mediate the molecular packing needed to create a functioning barrier. The biomass used is a wood hydrolysate, a polysaccharide-rich but not highly refined mixture where a fair amount of the native intermolecular and intramolecular hernicelluloses-lignin interactions are purposely preserved, resulting in barriers with very low oxygen permeabilities (OP) both at 50 and 80% relative humidity and, considerably lower OPs than coatings based on the corresponding highly purified spruce hemicellulose, O-acetyl galactoglucomannan (AcGGM). The component interactions and, mutual affinities effectively mediate an immobilization of the chain segments in a dense disordered structure, modeled through the Hansen's solubility parameter concept and quantified on the nanolength scale by positron annihilation lifetime spectrum (PALS).
Place, publisher, year, edition, pages
2011. Vol. 12, no 4, 1355-1362 p.
IdentifiersURN: urn:nbn:se:kth:diva-31287DOI: 10.1021/bm200128sISI: 000289223500058PubMedID: 21366288ScopusID: 2-s2.0-79953872797OAI: oai:DiVA.org:kth-31287DiVA: diva2:403236
Uppdaterad från submitted till published 20110506
QC 201103112011-03-112011-03-112013-05-15Bibliographically approved