PREPARATION OF MULTIPHASE BLOCK-COPOLYMERS BY REDOX POLYMERIZATION PROCESS .4. POLYMERIZATION OF METHYL-METHACRYLATE BY THE REDOX SYSTEM MN(III)-POLY(ETHYLENE GLYCOL) CONTAINING AZO GROUPS

CAKMAK I.

ANGEWANDTE MAKROMOLEKULARE CHEMIE, cilt.224, ss.49-54, 1995 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 224
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1002/apmc.1995.052240105
  • Dergi Adı: ANGEWANDTE MAKROMOLEKULARE CHEMIE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.49-54
  • Karadeniz Teknik Üniversitesi Adresli: Hayır

Özet

Redox polymerization of methyl methacrylate using Mn(III) with poly(ethylene glycol) having azo and hydroxy functions was carried out to yield ethylene glycolmethyl methacrylate block copolymers with labile azo linkages in the main chain. These prepolymers were used to initiate free-radical polymerization of styrene through thermal decomposition of the azo groups, resulting in the formation of multiblock copolymers. Successful blocking has been confirmed by fractional precipitation, a strong change in the molecular weight, and spectral measurements.