ABA triblock copolymers containing polyisoprene segments,such as polyisoprene b polystyrene b polyisoprene (PIP b PSt b PIP)and polyisoprene b poly(methyl methacrylate) b polyisoprene(PIP b PMMA b PIP),were prepared w...ABA triblock copolymers containing polyisoprene segments,such as polyisoprene b polystyrene b polyisoprene (PIP b PSt b PIP)and polyisoprene b poly(methyl methacrylate) b polyisoprene(PIP b PMMA b PIP),were prepared with macro iniferter technique.The macro iniferters (PSt CCDCM and PMMA CCDCM)bearing α and ω N,N diethyldithiocarbamyl (DC)groups were synthesized by bulk polymerization of St and MMA with diethyl 2,3 dicyano 2,3 di( p N,N diethyldithiocarbamylmethyl) phenylsuccinate (DDDCS) as a thermal iniferter.The block copolymerization of IP with PSt CCDCM or PMMA CCDCM was carried out under UV light irradiation.The block copolymers were characterized by 1H NMR,GPC and DSC analyses,and the polymerization proceeded as a living polymerization process.展开更多
文摘ABA triblock copolymers containing polyisoprene segments,such as polyisoprene b polystyrene b polyisoprene (PIP b PSt b PIP)and polyisoprene b poly(methyl methacrylate) b polyisoprene(PIP b PMMA b PIP),were prepared with macro iniferter technique.The macro iniferters (PSt CCDCM and PMMA CCDCM)bearing α and ω N,N diethyldithiocarbamyl (DC)groups were synthesized by bulk polymerization of St and MMA with diethyl 2,3 dicyano 2,3 di( p N,N diethyldithiocarbamylmethyl) phenylsuccinate (DDDCS) as a thermal iniferter.The block copolymerization of IP with PSt CCDCM or PMMA CCDCM was carried out under UV light irradiation.The block copolymers were characterized by 1H NMR,GPC and DSC analyses,and the polymerization proceeded as a living polymerization process.
