title: Hyperbranched Polymers by Type II Photoinitiated Self-Condensing Vinyl Polymerization.
abstract: Type II photoinitiated self-condensing vinyl polymerization for the preparation of hyperbranched polymers is explored using 2-hydroxyethyl methacrylate (HEMA) or 2-(dimethylamino)ethyl methacrylate (DMAEMA), and methyl methacrylate as hydrogen donating inimers and comonomer, respectively, in the presence of benzophenone and camphorquinone under UV and visible light. Upon irradiation at the corresponding wavelength, the excited photoinitiator abstracts hydrogen from HEMA or DMAEMA leading to the formation of initiating radicals. Depending on the concentration of inimers, type of the photoinitiator, and irradiation time, hyperbranched polymers with different branching densities and cross-linked polymers are formed.
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, TR-34469, Turkey.
authors.forename: Cansu
authors.initials: C
authors.lastname: Aydogan
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, TR-34469, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ciftci
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, TR-34469, Turkey.|Center of Excellence for Advanced Materials Research (CEAMR) and Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia.
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Yagci
mesh_terms: D008027:Light; D009682:Magnetic Resonance Spectroscopy; D008689:Methacrylates / Q000737:chemistry; D020366:Methylmethacrylate / Q000737:chemistry; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D011143:Polyvinyl Chloride / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D008689:Methacrylates; D011108:Polymers; D020366:Methylmethacrylate; C005044:hydroxyethyl methacrylate; D011143:Polyvinyl Chloride
keywords: hyperbranched polymers; photopolymerization; vinyl polymerization