期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 49, 期 13, 页码 2850-2858出版社
WILEY
DOI: 10.1002/pola.24719
关键词
atom transfer radical polymerization (ATRP); brush copolymer; brush terpolymer; graft polymers; nitroxide radical coupling (NRC) click reaction; NMR; poly(epsilon-caprolactone); poly(ethylene glycol); poly(methyl methacrylate); polyoxanorbornene; ring-opening metathesis polymerization (ROMP); ring opening polymerization (ROP); triple detection GPC (TD-GPC)
A 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-terminated poly(ethylene glycol) (PEG) or -poly(epsilon-caprolactone) (PCL) (PEG(11)-TEMPO or PCL23-TEMPO) is grafted as a side chain onto a ROMP-generated polyoxanorbornene (PONB) main backbone with bromide pendant groups (PONB20-Br) using the NRC click reaction to yield related the brush copolymers, PONB20-g-PEG(11) or PONB20-g-PCL23 catalyzed by Cu(I), Cu(0), and N,N,N',N '',N'''-pentamethyldiethylenetriamine in N,N-dimethylformamide at room temperature. Additionally, a ROMP-generated brush copolymer PONB9-g-poly(methyl methacrylate)(24) (PMMA)(24)-Cl was reacted with a PEG(11)-TEMPO or a PCL23-TEMPO precursor via the NRC click reaction to yield a corresponding brush terpolymer, PONB9-g-(PMMA(24)-b-PEG(11)) or PONB9-g-(PMMA(24)-b-PCL23) under a similar reaction condition described above. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 2850-2858, 2011
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