Description
Povidones are available in different molecular weights. The higher the molecular weight, the greater the viscosity and consequently the adhesive strength. The K-value denotes the intrinsic viscosity of the polymer related to the molecular weight, and is derived from the relative viscosity of the aqueous solution measured at 25°C. The direct correlation between the molecular weight and properties enables the appropriate grade to be used in each formulation in the appropriate concentration in order to achieve the optimum effect.