Inherent viscosity definition1/22/2024 Once the value of K is known, the viscosity can be determined by measuring the amount of time the test liquid flows between the two graduated marks. Inherent viscosity - Wikipedia Viscosity Definition, Facts, Formula, Units, & Examples. PBA of inherent viscosity, 4.1 dL/g, has been obtained in a hexane slurry with pyridine as the acid acceptor. viscosity, reduced viscosity, intrinsic viscosity or absolute viscosity. The viscosity behavior of macromolecular. The conventional definition of viscosity is a ratio of the pressure exerted on a material divided by the rate of shear on the material. The values of the intrinsic viscosity for a given polymer sample of a particular molecular weight will vary. This inherent viscosity can be easily and accurately measured with a capillary-type apparatus, using gravity to move the fluid. The intrinsic viscosity is not a direct measure of polymer molecular weight instead it is a measure of the size of a polymer coil in solution, with units of dL/g or mL/g. Where \(K\) is the value of a liquid with known viscosity and density such as water. Pg.539 When pure needle-like crystals of -aminobenzoyl chloride are polymerized in a high temperature, nonsolvent process, or alow temperature, slurry process, polymer is obtained which maintains the needle-like appearance of monomer. Intrinsic viscosity reflects the capability of a polymer in solution to enhance the viscosity of the solution. 7.2 Relationship between intrinsic viscosity and molecular weight.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |