Towards a super-strainable paper using the Layer-by-Layer technique
2014 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 100, 218-224 p.Article in journal (Refereed) Published
The Layer-by-Layer technique was used to build a polyelectrolyte multilayer on the surface of pulp fibres. The treated fibres were then used to prepare paper sheets and the mechanical properties of these sheets were evaluated as a function of the number of bi-layers on the fibres. Two different systems were studied: polyethyleneimine (PEI)/nanofibrillated cellulose (NFC), and polyallylamine hydrochloride (PAH)/hyaluronic acid (HA). Model experiments using dual polarization interferometry and SiO2 surfaces showed that the two systems gave different thicknesses for a given number of layers. The outer layer was found to be a key parameter in the PEI/NFC system, whereas it was less important in the PAH/HA system. The mechanical properties of the sheets made from the PAH/HA treated fibres were significantly greater than those made from untreated fibres, reaching 70 Nm/g in tensile index and 6.5% in strain at break. Such a modification could be very useful for 3D forming of paper, opening new perspectives in for example the packaging industry, with a renewable and biodegradable product as a potential substitute for some of the traditional oil-based plastics.
Place, publisher, year, edition, pages
2014. Vol. 100, 218-224 p.
Layer-by-Layer, Polyelectrolyte multilayer, Hyaluronic acid, Strain at break, Tensile index
IdentifiersURN: urn:nbn:se:kth:diva-106574DOI: 10.1016/j.carbpol.2013.03.049ISI: 000330092000028ScopusID: 2-s2.0-84887482182OAI: oai:DiVA.org:kth-106574DiVA: diva2:573990
QC 20140213. Updated from submitted to published.2012-12-042012-12-042014-11-17Bibliographically approved