Copolymerization reactions between cyclic(arylene disulfide) oligomers were studied. The cyclic disulfide oligomers derived from 4,4’-isopropylidene bisbenzenethiol gave soluble polysulfanes via copolymerization with S-8. The copolymerization reactions were studied both in solution and melt by GPC and NMR. Solution copolymerization reactions can only form polysulfanes with up to three to four sulfur linkages; however, melt copolymerization reactions gave polysulfanes with up to seven sulfur linkages( average). The melt copolymerization reactions between cyclic disulfide oligomers derived from 4,4’-thiobis (benzenethiol) and S-8 were studied using DSC, TGA, and DMTA. With increasing contents of sulfur in the polysulfanes, T(g)s, 5% weight losses by TGA, and tan delta decreased. With seven sulfur linkages in the polymer, it is a rubber with a T-g of 12 degrees C, a 5% weight loss by TGA of 249 degrees C, and tan delta of 44 degrees C, respectively.