JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.46, no.4, pp.1218-1228, 2008 (Journal Indexed in SCI)
Article / Article
Title of Journal :
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
atom transfer radical polymerization (ATRP), miktoarm star polymers, nitroxide-mediated radical polymerization, poly(epsilon-caprolactone), poly(ethylene glycol), poly(methyl methacrylate), polystyrene, poly(tert-butyl acrylate), ring-opening polymerization, [3+2] click reaction, TRANSFER RADICAL POLYMERIZATION, DIELS-ALDER REACTION, RING-OPENING POLYMERIZATION, H-SHAPED TERPOLYMERS, CLICK-CHEMISTRY, MIKTOARM STAR, BLOCK-COPOLYMERS, 1,3-DIPOLAR CYCLOADDITIONS, BRANCHED POLYMERS, MODULAR SYNTHESIS
Two samples of ABCD 4-miktoarm star quarterpolymer with A = polystyrene (PS), B = poly(epsilon-caprolactone) (PCL), C = poly(methyl methacrylate) (PMMA) or poly(tert-butyl acrylate) (PtBA), and D = poly(ethylene glycol) (PEG) were prepared using click reaction strategy (Cu(I)-catalyzed Huisgen [3 + 2] reaction). Thus, first, predefined block copolymers of different polymerization routes, PS-b-PCL with azide and PMMA-b-PEG and PtBA-b-PEG copolymers with alkyne functionality, were synthesized and then these blocks were combined together in the presence of Cu(I)/N,N,N',N '',N ''-pentamethyldiethylenetriamine as a catalyst in DMF at room temperature to give the target 4-miktoarm star quarterpolymers. The obtained miktoarm star quarter polymers were characterized by GPC, NMR, and DSC measurements. (C) 2008 Wiley Periodicals, Inc.