ABC-type hetero-arm star terpolymers through "click" chemistry


Altintas O., Hizal G. , TUNCA U.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, cilt.44, ss.5699-5707, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 44 Konu: 19
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1002/pola.21633
  • Dergi Adı: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Sayfa Sayıları: ss.5699-5707

Özet

Hetero-arm star ABC-type terpolymers, poly(methyl methacrylate)-polystyrene-poly(tert-butyl acrylate) (PMMA-PS-PtBA) and PMMA-PS-poly(ethylene glycol) (PEG), were prepared by using "Click" chemistry strategy. For this, first, PMMA-b-PS with alkyne functional group at the junction point was obtained from successive atom transfer radical polymerization (ATRP) and nitroxide-mediated radical polymerization (NMP) routes. Furthermore, PtBA obtained from ATRP of tBA and commercially available monohydroxyl PEG were efficiently converted to the azide end-functionalized polymers. As a second step, the alkyne and azide functional polymers were reacted to give the hetero-arm star polymers in the presence of CuBr/N,N,N',N'',N''-pentamethyldiethylenetriamine (PMDETA) in DMF at room temperature for 24 h. The hetero-arm star polymers were characterized by H-1 NMR, GPC, and DSC. (c) 2006 Wiley Periodicals, Inc.