Synthesis and characterization of graft and branched polymers via type-II photoinitiation

Muftuoglu A., Saner B., Demirel A., Yagci Y.

DESIGNED MONOMERS AND POLYMERS, vol.8, no.6, pp.645-658, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 6
  • Publication Date: 2005
  • Doi Number: 10.1163/156855505774597740
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.645-658
  • Middle East Technical University Affiliated: No


Preparation of graft and branched polymers via photo-induced radical polymerization and photo-induced self-condensing vinyl polymerization (SCVP) routes, respectively, was studied. Precursor random co-polymers of styrene (St) and 2-(dimethylamino)ethyl methacrylate (DAEMA) were obtained via thermal polymerization initiated by azoisobutyronitrile, (AIBN) and used as macromolecular co-initiators in photo-induced grafting experiments. Successful grafting was achieved, while cross-linking also occurred to some extent. The resulting graft co-polymers were characterized by H-1-NMR and GPC measurements. The synthesis of branched polymers was carried out by the use of DAEMA as an inimer in photoinduced SCVP, in which irradiations were performed in a photoreactor emitting light with a wavelength of 350 nm. Surface morphologies of branched and linear polymers were examined by atomic force microscopy (AFM) and compared.