The effects of anionic polyvinylalcohol have been investigated to prevent the deposition of α-Fe
2O
3 particles onto cotton and polyester fabrics. The results obtained were as follows:
(1) The preventive effect of the deposition in the SDS solution is maximum when the SDS solution is 6 mmol/1 in concentration.
(2) A remarkable preventive effect is not recognized in the normal (nonionic) PVA solution.
(3) However, a remarkable anti-soil-deposition effect is found in the anionic PVA solution. The PVA of lower degree of saponification is more effective.
Thus, the effective character of the anionic PVA is concluded to be the interaction between the relatively high polarity of α-Fe
2O
3 and ionic propery of anionic PVA.
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