کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1400236 | 984543 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of poly(methyl methacrylate-co-styrene)-block-polysulfide-block-poly(methyl methacrylate-co-styrene) copolymers by free radical polymerization combined with oxidative coupling Synthesis of poly(methyl methacrylate-co-styrene)-block-polysulfide-block-poly(methyl methacrylate-co-styrene) copolymers by free radical polymerization combined with oxidative coupling](/preview/png/1400236.png)
Poly(methyl methacrylate-co-styrene)-block-polysulfide-block-poly(methyl methacrylate-co-styrene) triblock copolymers were synthesized for the first time by the free radical copolymerization of methyl methacrylate (MMA) and styrene (St) in the presence of a thiocol oligomer as a chain transfer agent, followed by chemical oxidation of the remaining SH-end groups. The apparent chain transfer constant of the thiocol SH groups in the copolymerization reaction was estimated from the rate of consumption of the thiol groups versus the overall rate of consumption of the monomers (CT = 1.28). Based on this value, the chain transfer constant of the thiocol SH groups in St polymerization was calculated (CTSt=8.4). The triblock copolymers synthesized were characterized by SEC and 1H NMR measurements.
Journal: European Polymer Journal - Volume 42, Issue 10, October 2006, Pages 2247–2253