Abstract
Commercial chlorinated rubbers were fractionated by successive fractional precipitation method from the dilute solution of tetrahydrofuran with water as precipitant. Viscosity and light scattering measurements of the fractions in tetrahydrofuran were made at 30°C and room temperature respectively. The intrinsic viscosity-molecular weight relationship was obtained as[η]=1.98×10-4Mω0.68.
In addition the solution viscosities of the fractions were measured in various solvents. The unpertured molecular dimensions of the chlorinated rubber, calculated by the Stockmayer-Fixman method for each solvent, were found to depend on the solvent nature.
