Home List of Titles The influence on paper strength properties when building multilayers of weak polyelectrolytes onto wood fibres
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/231533
- The influence on paper strength properties when building multilayers of weak polyelectrolytes onto wood fibres
- Eriksson, Malin; Notley, Shannon M.; Wagberg, Lars
- Polyallylamine hydrochloride (PAH) and polyacrylic acid (PAA) have been used to build up polyelectrolyte multilayers (PEM) on wood fibres and on silicon oxide surfaces, under various pH conditions. Consecutive adsorption onto silicon oxide surfaces of PAH and PAA were studied using stagnation point adsorption reflectometry, and the results showed a steady build-up of multilayers. Furthermore, by altering pH, the build-up of the multilayer could be made either linear or exponential in terms of adsorbed amount. Nitrogen analysis of sheets prepared from modified fibres showed that the adsorbed amount of PAH increased throughout PEM build-up, the amount of increase depending on pH during adsorption. Strength measurements of the sheets, i.e., stress at break and strain at break, showed significant improvements ranging from 60 to 200 percent, depending on both pH during adsorption and type of polyelectrolyte in the outer layer. A good correlation between the adsorbed amount of PAH and the improved strength properties of the paper was also found.
- Publication type
- Journal article
- Journal of Colloid and Interface Science, Vol. 292, no. 1 (Dec 2005), pp. 38-45
- Publication year
- FOR Code(s)
- 02 Physical Sciences; 03 Chemical Sciences; 09 Engineering
- Adsorption; Amine; Correlation analysis; Correlation methods; Fibre bonding; Measurement; Multilayers; Nitrogen; Optical reflectometry; Paper strength properties; pH; Polyallylamine; Polycyclic aromatic hydrocarbons; Polyelectrolytes; Reflectometry; Refractive index increment; Steady state; Strain at break; Surface property; Tensile index; Unclassified drug; Wood fibres
- Academic Press
- Publisher URL
- Copyright © 2005 Elsevier Inc. All rights reserved.
- Peer reviewed