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Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by p-Chloromethylstyrene Copolymers

Aiqing Zhang

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Abstract

A well-defined graft copolymer of styrene(St) and methyl methacrylate(MMA) was synthesized by atom transfer radical polymerization with CuCl/TMEDA as catalyst and the copolymer of styrene and p-chloromethyl styrene(p-CMS) as macroinitiator,which was synthesized by copolymerization of St and p-CMS with AIBN as initiator.Structures of these copolymers,i.e.P(St-co-CMS) and P(S-g-MMA),were confirmed by means of IR and ~1HNMR after purification.The average graft number,the average length of side chains,the graft ratio and the graft efficiency were also investigated.The results showed that the relative molecule weight distribution of P(S-g-MMA) was narrow,the number and length of grafts can be controlled,and the graft efficiency was as high as 93.7%.

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What this paper is about

A well-defined graft copolymer of styrene(St) and methyl methacrylate(MMA) was synthesized by atom transfer radical polymerization with CuCl/TMEDA as catalyst and the copolymer of styrene and p-chloromethyl styrene(p-CMS) as macroinitiator,which was synthesized by copolymerization of St and p-CMS with AIBN as initiator.Structures of these copolymers,i.e.P(St-co-CMS) and P(S-g-MMA),were confirmed by means of IR and ~1HNMR after purification.The average graft number,the average length of side chains,the graft ratio and the graft efficiency were also investigated.The results showed that the relative molecule weight distribution of P(S-g-MMA) was narrow,the number and length of grafts can be controlled,and the graft efficiency was as high as 93.7%.

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Available abstract

A well-defined graft copolymer of styrene(St) and methyl methacrylate(MMA) was synthesized by atom transfer radical polymerization with CuCl/TMEDA as catalyst and the copolymer of styrene and p-chloromethyl styrene(p-CMS) as macroinitiator,which was synthesized by copolymerization of St and p-CMS with AIBN as initiator.Structures of these copolymers,i.e.P(St-co-CMS) and P(S-g-MMA),were confirmed by means of IR and ~1HNMR after purification.The average graft number,the average length of side chains,the graft ratio and the graft efficiency were also investigated.The results showed that the relative molecule weight distribution of P(S-g-MMA) was narrow,the number and length of grafts can be controlled,and the graft efficiency was as high as 93.7%.

Key concepts: Copolymer, Styrene, Methyl methacrylate, Polymer chemistry, Atom-transfer radical-polymerization, Polymerization, Radical polymerization, Chemistry

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Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by p-Chloromethylstyrene Copolymers — Research Paper | ScholarLens