Abstract
The adsorption of PVAc-Allyl sulfonated copolymers (S-PVA) onto an α-Fe2O3 surface in an aqueous solution was investigated in regard to its capacity to prevent the deposition of α-Fe2O3 particles of fabrics. The coloration of PVA-I2 complex was of use for determining S-PVA with satisfactory reproducible results. From the isotherms of adsorption of S-PVA I (not saponified) and S-PVA II (98mol% saponified) onto α-Fe2O3, the following results were obtained.
1) The amounts of S-PVA I and S-PVA II adsorbed onto α-Fe2O3 were about 60mg/α-Fe2O3 (g) and 20mg/α-Fe2O3 (g) respectively.
2) In dilute solutions, the isotherms for the adsorption of both S-PVA I and S-PVA II onto α-Fe2O3 should be similar to those for the Langmuir type adsorption.
