Abstract
Continued from the previous report, the preventive effect of an anionic polyvinyl alcohol (PVA) on the deposition of α-Fe2O3particles onto cotton and polyester fabrics in the solution containing surfactant has been investigated.
The results obtained were as follows:
1) Although the SDS concentration of about 6 mmol/lshowed the highest preventive effect against deposition, the effect was not found, independently of the concentration, in the polyoxyethylene-nonyl-phenolether (APE) solution.
2) When APE was added to an anionic PVA solution, the preventive effect against the deposition was found even in the lower concentration comparing to the solution without adding the APE.
3) A remarkable preventive effect against the deposition was recognized in an anionic PVA of higher degree of saponification in the system of coexistence of anionic PVA and SDS. However, an anionic PVA of lower degree of saponification did not show the preventive effect against the deposition. Thus, the preventive effect of the anionic PVA solution with the surfactant was considered to be an interaction between the surfactant and an anionic PVA with various degree of saponification.
