Polyelectrolyte multilayers on wood fibers: Influence of molecular weight on layer properties and mechanical properties of papers from treated fibers
2008 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 328, no 2, 233-242 p.Article in journal (Refereed) Published
This paper compares the influence of the molecular weight of polylelectrolytes forming polyelectrolyte multilayers (PEM) on wood fibers on adhesion and paper strength. Sheets were made from fibers treated with poly(allylamine hydrochloride) (PAH)/poly(acrylic acid) (PAA) of molecular mass 70,000 and 240,000, respectively, and of poly(dimethyldiallylammonium chloride) (PDADMAC)/poly(styrene sulfonate) (PSS) of molecular mass 30,000 and 80,000, respectively. The results were compared to what has recently been reported for PEM formation on fibers using a low-molecular-mass combination of PAH and PAA and a high-molecular-mass combination of PDADMAC/PSS. There was a less significant improvement in the case of the low-molecular-mass PDADMAC/PSS and the high-molecular-mass PAH/PAA. The adsorbed amounts of PAH and PDADMAC were also determined, showing a lower adsorbed amount of the low-molecular-mass PAH than of the high-molecular-mass PDADMAC. The amount of low-molecular-mass PDADMAC was similar to that found for high-molecular-mass PDADMAC/PSS. Individual fibers were partly treated and studied, showing a less significant decrease in wettability with low-molecular-mass PDADMAC/PSS than with the high-molecular-mass combination. The effect of the molecular weight on the adhesion was discussed in terms of the structure and wettability of the PEMs.
Place, publisher, year, edition, pages
2008. Vol. 328, no 2, 233-242 p.
Polyelectrolyte; Multilayer; Molecular mass; Adsorption; Reflectance; Contact angle; Dynamics; Paper; Mechanical properties; Individual; Cellulose fiber
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-8745DOI: 10.1016/j.jcis.2008.08.065ISI: 000260845300003ScopusID: 2-s2.0-64849095165OAI: oai:DiVA.org:kth-8745DiVA: diva2:14151
QC 20100823. Uppdaterad från manuskript till artikel (20100823).2008-06-132008-06-132010-08-23Bibliographically approved