The Intrinsic Viscosity of Poly(4-vinylpyridine) of a Low Molecular Weight

The intrinsic viscosities of poly(4-vinylpyridine) (\barMn:1.37×103–9.67×104) were measured by use of various solvents. For every solvent, log[η]-log\barMn plots gave lines with a slope of 1/2 in the region of low molecular weights (\barMn≤104). These lines were parallel to one another. This viscosity behavior was interpreted in terms of the influence of solvents on short-range interactions in the polymer chains.