Abstract
During the past few years interest in the preparation and properties of long-chain polymers has been intensified because of their importance in the manufacture of improved petroleum products, plastics, and chemical-resistant paints. Materials such as polybutene and rubber form solutions, the viscosities of which increase rapidly with concentration. Typical viscosity-concentration data on dilute solutions of polybutene have been published. A number of workers have determined the viscosities of several polymers in dilute solutions, and from these investigations equations have been proposed for expressing viscosity as a function of molecular constitution. One of the most important considerations has been the question whether very high polymeric substances exist in solution as long macromolecules, completely dispersed, or as aggregations of much shorter molecules associated in the micellar state. Staudinger, one of the chief proponents of the former view, carried out a large amount of work on the viscosity of solutions of such linear polymers. His conclusions regarding chain length were based almost entirely on such measurements interpreted on the basis of the viscosity relation:
Revisited Kinetic Chain Length and Reactivity Ratio Approaches for Linear Polymers and Copolymers