The grafting studies on some vinyl polymers via atom transfer radical polymerization

In this study, poly[styrene-co-p-bis(2-dihydroxyethyl)amino methyl styrene] and poly[vinylchlored-co-2,2?-(vinylimino)diethanol%4] copolymers were synthesized by modificatin of poly(styrene-co-p-chloromethylstyrene) and PVC with diethanolamin. Poly{styrene-co-p-bis[2-(2-bromoisobutiroxy)etil]amino methyl styrene}, p(St-ko-D-i-BBS%5) and poly[vinylchloride-co-bis(2-bromo-2-methylpropanoatoethyl)aminovinyl%4],p(VCl-ko-BMAV%4) as two armed macroinitiator were prepared by acylation of ?OH groups in above two copolymers with ?-bromoisobutirylbromide. A series of grafting studies with isobornylacrylate was carried out in the presence of the poly{styrene-co-p-bis[2-(2-bromoisobutiroxy)etil]amino methil styrene}, p(St-ko-D-i-BBS%5) and the catalyst CuBr/2,20-bipyridyne(bpy) at 110 °C and grafting studies with methylmethacrylate and styrene was carried out in the presence of the poly[vinylchloride-co-bis(2-bromo-2-methylpropanoatoethyl)aminovinyl%4],p(VCl-ko-BMAV%4) at same conditions.In this study, in addition to, poli{styrene-co-[3,5-bis(2-chloro-2-acetoxyphenyl)metakrilat]}, p(St-co-CAPMA%4) macroinitiator prepared of styrene with 3,5-bis(2-chloro-2-acetoxyphenyl)methacrylate monomers from free radical polymerization. A series of grafting studies with isobornylmethacrylate and n-buthylmethacrylate was carried out in the presence of the p(St-co-CAPMA%4) the catalyst CuBr/2,20-bipyridyne(bpy) at 110 °C.All the polymers were structurally characterized by FTIR and 1H-NMR spectra. The thermally stability and glass-transition temperature of all the graft copolymers determined by TGA and DSC curves. The dielectric feature of all the polymers were measured at 1 kHz at room temperature The dielectric features of p(VCl-ko-BMAV%4) and graft copolymer preparing with MMA, against the frequency in the room temperature was examined. Dielectric constant of macroinitiator was calculated as 4.76 in 100 Hz. And dielectric features of the polymers against the temperature was examined.KEYWORDS: Graft copolymerization; Thermal properties; Dielectric properties; ATRP; Isobornylacrylate; Ethylmethacrylate; Isobornylmethacrylate, n-buthylmethacrylate; PVC.