Abstract
The influence of sodium polyacrylate (Na-PAA) on the deposition of dispersed polystyrene (PS) latex particles on cotton and nylon-6 fibers in water was studied from the standpoint of interaction energy between latex particles and fibers. The deposited amount and rate of deposition of PS latex particles on the fibers in the presence of Na-PAA were less than when Na-PAA was absent, particularly in the case of cotton fibers. This inhibitive action of Na-PAA on the deposition of PS latex particles on both fibers was slightly more effective in the case of Na-PAA with high molecular weight than with low molecular weight. The above-mentioned function of Na-PAA on cotton fibers may possibly be due primarily to steric repulsive interactions, since total interaction energy (VT) due to electrostatic and van der Waals' forces between latex particles and fibers did not increase by the addition of Na-PAA. And the function of Na-PAA on nylon-6 fibers may be due primarily to steric repulsive interactions similar to those noted cotton fibers, although the contribution of electrostatic repulsive interactions must be taken into consideration.
