Croatica Chemica Acta, Vol. 63 No. 1, 1990.
Izvorni znanstveni članak
Effect of the Molecular Weight of Polyvinyl Alcohol on Some Adsorption Parameters in the Titania-Polymer Solution System
Stanislaw Chibowski
; Department of Radiochemistry and Colloid Chemistry, Institute of Chemistry, Maria Curie Sklodowska University, 20031 Lublin, Poland
Sažetak
Fractions of polyvinyl alcohol (PVA) obtained by separation of the PVA samples of the mean molecular weight of 72000 and 125000 have been studied.
The effect of the molecular weight of PVA, pH value and concentration of the solution on the adsorbed amount and the thickness of the adsorption layer of PVA (<5) were measured. The value of d was determined from the viscosity change of titania suspensions with adsorbed PVA in relation to the same suspensions without PVA. The volume occupied by a polyvinyl alcohol molecule at the interface region was evaluated from the adsorbed amount and the value of d. Thus calculated volume was then compared with the volume occupied by a PVA molecule in the bulk solution.
Ključne riječi
Hrčak ID:
137418
URI
Datum izdavanja:
10.3.1990.
Posjeta: 1.795 *