Comparison of the change in viscosity of a polyvinylalcohol solution by adding polyethylene glycol and polyvinylpyrrolidone to solutions of polyvinylalcohol

الملخص EN

The aim of this research is to improve the flow properties of polymers, in particular viscosity, by mixing polymers to be used in various fields.

samples prepared by stirring polyvinyl alcohol on fire for half a second in a fixed weight ratio with divergent weight ratios of polyethylene glycol and polyvinylpyrrolidone, both separately.

other samples were prepared in the same way by mixing the three polymers followed by measuring the molecular weight of all the samples.

this method of preparation made the polymers insoluble in water, therefore nitric acid was used to dissolve them.

flow time of the solvent and all solutions were measured, which was used to calculate the viscosities, it has been shown that these viscosities increase with increasing concentrations of polymers in solutions by establishing a positive relationship between them, it was found that the intrinsic viscosity decreases with increasing concentrations after being graphed using intrinsic viscosity calculations from the relationship between specific viscosity and relative viscosity logogram with concentration.

these results may be used in industrial medical applications as well as scientific studies.