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- W2387841622 abstract "The controllable molecular weight and polydispersity of polyacrylonitriles(PANs) were synthesized in ionic liquids(ILs) by atom transfer radical polymerization(ATRP) using ethyl-2 bromopropionate(EPN-Br) as initiator and CuBr/pentamethyldiethylenetria-mine(PMDETA) as catalyst.The polydispersity index(PDI) in the ATRP of acrylonitriel(AN) in ILs is lower than 1.3.From the polymerization kinetics,plots of ln([M]0/[M]) with time show a linear dependence at the early stage of polymerization while the deviation is observed with the conversion rate increasing.The polymerization rate in ILs,especially in 1-butyl-3-methylimidazolium chloride([bmim]Cl),is higher than that in N,N-dimethylformamide(DMF).The polymerization rate increased and the average molecular weight decreased with temperature increasing.The polymerization rate,molecular weight and PDI varied with the variation of [AN]0:[EPN-Br]0:[CuBr]0:[PMDETA]0 ratio in the experimental range,the polymerization of AN in [bmim]Cl displayed living polymerization characteristics.Moreover,the catalyst and ILs are easily isolated from the polymer and reused." @default.
- W2387841622 created "2016-06-24" @default.
- W2387841622 creator A5010668357 @default.
- W2387841622 date "2011-01-01" @default.
- W2387841622 modified "2023-09-24" @default.
- W2387841622 title "Atom Transfer Radical Polymerization of Acrylonitrile in Ionic Liquids" @default.
- W2387841622 hasPublicationYear "2011" @default.
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