Copolymerization of elemental sulfur with cyclic(arylene disulfide) oligomers

摘要: Copolymerization reactions between cyclic(arylene disulfide) oligomers were studied. The cyclic disulfide derived from 4,4′-isopropylidene bisbenzenethiol gave soluble polysulfanes via copolymerization with S8. studied both in solution and melt by GPC NMR. Solution can only form up to three four sulfur linkages; however, seven linkages (average). 4,4′-thiobis(benzenethiol) S8 using DSC, TGA, DMTA. With increasing contents of the polysulfanes, Tgs, 5% weight losses tan δ decreased. polymer, it is a rubber Tg 12°C, loss TGA 249°C, 44°C, respectively. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Chem 35: 2961–2968,