Visible Light-Induced Atom Transfer Radical Polymerization

TAŞDELEN M. A., Ciftci M., Yagci Y.

MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.213, sa.13, ss.1391-1396, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 213 Sayı: 13
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1002/macp.201200204
  • Dergi Adı: MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1391-1396
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Visible light-induced reverse and simultaneous reverse and normal initiation (SR&NI) atom transfer radical polymerizations of vinyl monomers are examined using various dyes and type I photoinitiators. The effect of photoinitiator types on the control of molecular weight and distribution is described. In both dye and type I photoinitiator sensitized SR&NI ATRP systems, the molecular weights increase linearly with conversion. However, the experimental molecular weights are considerably higher than the theoretical values and the polymers show broad-molecular-weight distributions ranging from 1.28 to 1.60 in the dye-sensitized SR&NI ATRP. However, the polymers obtained by SR&NI ATRP using type I photoinitiator system had molecular weight values close to the theoretical ones and very narrow-molecular-weight distributions ranging from 1.111.18.