The period oxidation involves the formation of a cyclic diester of periodate. Decomposition of this cyclic diester yields two carbonyl fragments and iodiate ion. PVA is water soluble and has little or no cross-linking. Cross-linking will increase the overall strength of the polymer and reduce the solubility of any polymer in all solvents especially that of PVA in water. . PVA is monodisperse.
Monodisperse polymers are polymers that have the same monomer unit.
A polydisperse polymer is a polymer that varies from one type of monomer to another. Defining Viscosity Viscosity is the resistance to flow which is a property of fluids, both liquids and gases. When a liquid flows through a tube, layers of liquid slide over each other and intermolecular forces cause resistance to flow. A is area, and v is the velocity. The unit for viscosity is the Poise.