SynopsisThe influence of solvents on the branching degrees G (the ratio of intrinsic viscosities) and g (the ratio of radii of gyration), and on the branching exponent b in equation G = gb has been estimated using the recently reported equations for branched polymers. The following relations have been found G < GO, gx = &,, and b > bo, where subscripts 0 and x denote the unperturbed (or theta) conditions and the type of average value for polydisperse polymers, ' respectively. Hence the expansion coefficients of branched and linear macromolecules are related by a,,br < a,,,in and aLb. = asfin.