Adsorption studies of phenolformaldehyde resin onto cellulose fibres
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posted on 2025-03-19, 00:00 authored by Karen Stack, Lawrence Dunn, Noel RobertsAdsorption of phenolformaldehyde resin (PFR) onto microcrystalline cellulose was investigated as a function of pH. ionic strength, temperature and shear. The effect of adsorption was also studied by measuring the electrophoretic mobility of the cellulose particles. Adsorption was found to occur above a critical ionic strength. Suppression of the electrical double layer and reduced solubility of PFR appear to be necessary to promote adsorption. Increasing the intensity and duration of shear was found to increase the amount of PFR adsorbed. In the presence of high molecular weight poly(ethylene oxide) (PEO), complex formation between PEO and PFR also competes with the interaction between PFR and the cellulose particles. The mobility data indicate that the PFR directly affects the cellulose surface rather than the PEO. © 1993.
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Publication title
Colloids and Surfaces A : Physicochemical and Engineering AspectsVolume
70Issue
1Article number
1Number
1Pagination
23-31Publisher
ElsevierPublication status
- Published
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