https://doi.org/10.1351/goldbook.B00726
A parameter, , characterizing the effect of long-chain branches on the size of a branched macromolecule in solution and defined as the ratio of the mean-square , to that of an otherwise identical linear molecule, , with the same .
radius of gyration
of a branched molecule, relative molecular mass
in the same solvent and at the same temperature, i.e.