Plasma-Initiated Controlled/Living Radical Polymerization of Methyl Methacrylate in the Presence of 2-Cyanoprop-2-yl 1-dithionaphthalate (CPDN)



Summary: Plasma-initiated controlled/living radical polymerization of methyl methacrylate (MMA) was carried out in the presence of 2-cyanoprop-2-yl 1-dithionaphthalate. Well-defined poly(methyl methacrylate) (PMMA), with a narrow polydispersity, could be synthesized. The polymerization is proposed to occur via a RAFT mechanism. Chain-extension reactions were also successfully carried out to obtain higher molecular weight PMMA and PMMA-block-PSt copolymer.

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Dependence of ln([M]0/[M]) on post-polymerization time (above), and \overline M _{\rm n} and PDI against conversion (below) for plasma initiated RAFT polymerization of MMA at 25 °C.